diff --git a/.github/workflows/CI_BracketingNonlinearSolve.yml b/.github/workflows/CI_BracketingNonlinearSolve.yml
index e83060bdb..956fa33a2 100644
--- a/.github/workflows/CI_BracketingNonlinearSolve.yml
+++ b/.github/workflows/CI_BracketingNonlinearSolve.yml
@@ -69,3 +69,41 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: true
+
+  downgrade:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - "1.10"
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/julia-downgrade-compat@v1
+        with:
+          skip: NonlinearSolveBase, SciMLJacobianOperators
+      - name: "Install Dependencies and Run Tests"
+        run: |
+          import Pkg
+          Pkg.Registry.update()
+          # Install packages present in subdirectories
+          dev_pks = Pkg.PackageSpec[]
+          for path in ("lib/NonlinearSolveBase", "lib/SciMLJacobianOperators")
+              push!(dev_pks, Pkg.PackageSpec(; path))
+          end
+          Pkg.develop(dev_pks)
+          Pkg.instantiate()
+          Pkg.test(; coverage="user")
+        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=lib/BracketingNonlinearSolve {0}
+      - uses: julia-actions/julia-processcoverage@v1
+        with:
+          directories: lib/BracketingNonlinearSolve/src,lib/BracketingNonlinearSolve/ext,lib/NonlinearSolveBase/src,lib/NonlinearSolveBase/ext,lib/SciMLJacobianOperators/src
+      - uses: codecov/codecov-action@v4
+        with:
+          file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true
+          fail_ci_if_error: true
diff --git a/.github/workflows/CI_NonlinearSolve.yml b/.github/workflows/CI_NonlinearSolve.yml
index 24be53295..7c1b55567 100644
--- a/.github/workflows/CI_NonlinearSolve.yml
+++ b/.github/workflows/CI_NonlinearSolve.yml
@@ -83,3 +83,47 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: true
+
+  downgrade:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - "1.10"
+        group:
+          - Core
+          - Downstream
+          - Wrappers
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/julia-downgrade-compat@v1
+        with:
+          skip: SciMLJacobianOperators, BracketingNonlinearSolve, NonlinearSolveBase, SimpleNonlinearSolve, NonlinearSolveFirstOrder, NonlinearSolveSpectralMethods, NonlinearSolveQuasiNewton
+      - name: "Install Dependencies and Run Tests"
+        run: |
+          import Pkg
+          Pkg.Registry.update()
+          # Install packages present in subdirectories
+          dev_pks = Pkg.PackageSpec[]
+          for path in ("lib/SciMLJacobianOperators", "lib/BracketingNonlinearSolve", "lib/NonlinearSolveBase", "lib/SimpleNonlinearSolve", "lib/NonlinearSolveFirstOrder", "lib/NonlinearSolveSpectralMethods", "lib/NonlinearSolveQuasiNewton")
+              push!(dev_pks, Pkg.PackageSpec(; path))
+          end
+          Pkg.develop(dev_pks)
+          Pkg.instantiate()
+          Pkg.test(; coverage="user")
+        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
+        env:
+          GROUP: ${{ matrix.group }}
+      - uses: julia-actions/julia-processcoverage@v1
+        with:
+          directories: src,ext,lib/SciMLJacobianOperators/src,lib/BracketingNonlinearSolve/src,lib/NonlinearSolveBase/src,lib/NonlinearSolveBase/ext,lib/SimpleNonlinearSolve/src,lib/NonlinearSolveFirstOrder/src,lib/NonlinearSolveSpectralMethods/src,lib/NonlinearSolveQuasiNewton/src
+      - uses: codecov/codecov-action@v4
+        with:
+          file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true
+          fail_ci_if_error: true
diff --git a/.github/workflows/CI_NonlinearSolveBase.yml b/.github/workflows/CI_NonlinearSolveBase.yml
index 0ba7c11d2..8b303ae2e 100644
--- a/.github/workflows/CI_NonlinearSolveBase.yml
+++ b/.github/workflows/CI_NonlinearSolveBase.yml
@@ -68,3 +68,41 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: true
+
+  downgrade:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - "1.10"
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/julia-downgrade-compat@v1
+        with:
+          skip: SciMLJacobianOperators
+      - name: "Install Dependencies and Run Tests"
+        run: |
+          import Pkg
+          Pkg.Registry.update()
+          # Install packages present in subdirectories
+          dev_pks = Pkg.PackageSpec[]
+          for path in ("lib/SciMLJacobianOperators",)
+              push!(dev_pks, Pkg.PackageSpec(; path))
+          end
+          Pkg.develop(dev_pks)
+          Pkg.instantiate()
+          Pkg.test(; coverage="user")
+        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=lib/NonlinearSolveBase {0}
+      - uses: julia-actions/julia-processcoverage@v1
+        with:
+          directories: lib/NonlinearSolveBase/src,lib/NonlinearSolveBase/ext,lib/SciMLJacobianOperators/src
+      - uses: codecov/codecov-action@v4
+        with:
+          file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true
+          fail_ci_if_error: true
diff --git a/.github/workflows/CI_NonlinearSolveFirstOrder.yml b/.github/workflows/CI_NonlinearSolveFirstOrder.yml
index 8b93788b1..8f68f398b 100644
--- a/.github/workflows/CI_NonlinearSolveFirstOrder.yml
+++ b/.github/workflows/CI_NonlinearSolveFirstOrder.yml
@@ -69,3 +69,41 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: true
+
+  downgrade:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - "1.10"
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/julia-downgrade-compat@v1
+        with:
+          skip: NonlinearSolveBase, SciMLJacobianOperators
+      - name: "Install Dependencies and Run Tests"
+        run: |
+          import Pkg
+          Pkg.Registry.update()
+          # Install packages present in subdirectories
+          dev_pks = Pkg.PackageSpec[]
+          for path in ("lib/SciMLJacobianOperators", "lib/NonlinearSolveBase")
+              push!(dev_pks, Pkg.PackageSpec(; path))
+          end
+          Pkg.develop(dev_pks)
+          Pkg.instantiate()
+          Pkg.test(; coverage="user")
+        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=lib/NonlinearSolveFirstOrder {0}
+      - uses: julia-actions/julia-processcoverage@v1
+        with:
+          directories: lib/NonlinearSolveFirstOrder/src,lib/NonlinearSolveBase/src,lib/NonlinearSolveBase/ext,lib/SciMLJacobianOperators/src
+      - uses: codecov/codecov-action@v4
+        with:
+          file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true
+          fail_ci_if_error: true
diff --git a/.github/workflows/CI_NonlinearSolveQuasiNewton.yml b/.github/workflows/CI_NonlinearSolveQuasiNewton.yml
index 1e3815ea9..e3eedda30 100644
--- a/.github/workflows/CI_NonlinearSolveQuasiNewton.yml
+++ b/.github/workflows/CI_NonlinearSolveQuasiNewton.yml
@@ -20,33 +20,71 @@ concurrency:
   cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
 
 jobs:
-  test:
-    runs-on: ${{ matrix.os }}
+  # test:
+  #   runs-on: ${{ matrix.os }}
+  #   strategy:
+  #     fail-fast: false
+  #     matrix:
+  #       version:
+  #         - "1.10"
+  #         - "1"
+  #       os:
+  #         - ubuntu-latest
+  #         - macos-latest
+  #         - windows-latest
+  #   steps:
+  #     - uses: actions/checkout@v4
+  #     - uses: julia-actions/setup-julia@v2
+  #       with:
+  #         version: ${{ matrix.version }}
+  #     - uses: actions/cache@v4
+  #       env:
+  #         cache-name: cache-artifacts
+  #       with:
+  #         path: ~/.julia/artifacts
+  #         key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
+  #         restore-keys: |
+  #           ${{ runner.os }}-test-${{ env.cache-name }}-
+  #           ${{ runner.os }}-test-
+  #           ${{ runner.os }}-
+  #     - name: "Install Dependencies and Run Tests"
+  #       run: |
+  #         import Pkg
+  #         Pkg.Registry.update()
+  #         # Install packages present in subdirectories
+  #         dev_pks = Pkg.PackageSpec[]
+  #         for path in ("lib/SciMLJacobianOperators", "lib/NonlinearSolveBase")
+  #             push!(dev_pks, Pkg.PackageSpec(; path))
+  #         end
+  #         Pkg.develop(dev_pks)
+  #         Pkg.instantiate()
+  #         Pkg.test(; coverage="user")
+  #       shell: julia --color=yes --code-coverage=user --depwarn=yes --project=lib/NonlinearSolveQuasiNewton {0}
+  #     - uses: julia-actions/julia-processcoverage@v1
+  #       with:
+  #         directories: lib/NonlinearSolveQuasiNewton/src,lib/NonlinearSolveBase/src,lib/NonlinearSolveBase/ext,lib/SciMLJacobianOperators/src
+  #     - uses: codecov/codecov-action@v4
+  #       with:
+  #         file: lcov.info
+  #         token: ${{ secrets.CODECOV_TOKEN }}
+  #         verbose: true
+  #         fail_ci_if_error: true
+
+  downgrade:
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         version:
           - "1.10"
-          - "1"
-        os:
-          - ubuntu-latest
-          - macos-latest
-          - windows-latest
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
-      - uses: actions/cache@v4
-        env:
-          cache-name: cache-artifacts
+      - uses: julia-actions/julia-downgrade-compat@v1
         with:
-          path: ~/.julia/artifacts
-          key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
-          restore-keys: |
-            ${{ runner.os }}-test-${{ env.cache-name }}-
-            ${{ runner.os }}-test-
-            ${{ runner.os }}-
+          skip: NonlinearSolveBase, SciMLJacobianOperators
       - name: "Install Dependencies and Run Tests"
         run: |
           import Pkg
diff --git a/.github/workflows/CI_NonlinearSolveSpectralMethods.yml b/.github/workflows/CI_NonlinearSolveSpectralMethods.yml
index 7999ee906..f39420efa 100644
--- a/.github/workflows/CI_NonlinearSolveSpectralMethods.yml
+++ b/.github/workflows/CI_NonlinearSolveSpectralMethods.yml
@@ -69,3 +69,41 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: true
+
+  downgrade:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - "1.10"
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/julia-downgrade-compat@v1
+        with:
+          skip: NonlinearSolveBase, SciMLJacobianOperators
+      - name: "Install Dependencies and Run Tests"
+        run: |
+          import Pkg
+          Pkg.Registry.update()
+          # Install packages present in subdirectories
+          dev_pks = Pkg.PackageSpec[]
+          for path in ("lib/SciMLJacobianOperators", "lib/NonlinearSolveBase")
+              push!(dev_pks, Pkg.PackageSpec(; path))
+          end
+          Pkg.develop(dev_pks)
+          Pkg.instantiate()
+          Pkg.test(; coverage="user")
+        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=lib/NonlinearSolveSpectralMethods {0}
+      - uses: julia-actions/julia-processcoverage@v1
+        with:
+          directories: lib/NonlinearSolveSpectralMethods/src,lib/NonlinearSolveBase/src,lib/NonlinearSolveBase/ext,lib/SciMLJacobianOperators/src
+      - uses: codecov/codecov-action@v4
+        with:
+          file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true
+          fail_ci_if_error: true
diff --git a/.github/workflows/CI_SciMLJacobianOperators.yml b/.github/workflows/CI_SciMLJacobianOperators.yml
index 3f243a8b3..4d1f6780d 100644
--- a/.github/workflows/CI_SciMLJacobianOperators.yml
+++ b/.github/workflows/CI_SciMLJacobianOperators.yml
@@ -61,3 +61,33 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: true
+
+  downgrade:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - "1.10"
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/julia-downgrade-compat@v1
+      - name: "Install Dependencies and Run Tests"
+        run: |
+          import Pkg
+          Pkg.Registry.update()
+          Pkg.instantiate()
+          Pkg.test(; coverage="user")
+        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=lib/SciMLJacobianOperators {0}
+      - uses: julia-actions/julia-processcoverage@v1
+        with:
+          directories: lib/SciMLJacobianOperators/src
+      - uses: codecov/codecov-action@v4
+        with:
+          file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true
+          fail_ci_if_error: true
diff --git a/.github/workflows/CI_SimpleNonlinearSolve.yml b/.github/workflows/CI_SimpleNonlinearSolve.yml
index a9d6d4e0e..0212232a8 100644
--- a/.github/workflows/CI_SimpleNonlinearSolve.yml
+++ b/.github/workflows/CI_SimpleNonlinearSolve.yml
@@ -76,3 +76,47 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: true
+
+  downgrade:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - "1.10"
+        group:
+          - core
+          - adjoint
+          - alloc_check
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/julia-downgrade-compat@v1
+        with:
+          skip: NonlinearSolveBase, BracketingNonlinearSolve, SciMLJacobianOperators
+      - name: "Install Dependencies and Run Tests"
+        run: |
+          import Pkg
+          Pkg.Registry.update()
+          # Install packages present in subdirectories
+          dev_pks = Pkg.PackageSpec[]
+          for path in ("lib/NonlinearSolveBase", "lib/BracketingNonlinearSolve", "lib/SciMLJacobianOperators")
+              push!(dev_pks, Pkg.PackageSpec(; path))
+          end
+          Pkg.develop(dev_pks)
+          Pkg.instantiate()
+          Pkg.test(; coverage="user")
+        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=lib/SimpleNonlinearSolve {0}
+        env:
+          GROUP: ${{ matrix.group }}
+      - uses: julia-actions/julia-processcoverage@v1
+        with:
+          directories: lib/SimpleNonlinearSolve/src,lib/SimpleNonlinearSolve/ext,lib/SciMLJacobianOperators/src,lib/BracketingNonlinearSolve/src,lib/BracketingNonlinearSolve/ext,lib/NonlinearSolveBase/src,lib/NonlinearSolveBase/ext
+      - uses: codecov/codecov-action@v4
+        with:
+          file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true
+          fail_ci_if_error: true
diff --git a/.github/workflows/Downgrade.yml b/.github/workflows/Downgrade.yml
deleted file mode 100644
index 6d619f9ab..000000000
--- a/.github/workflows/Downgrade.yml
+++ /dev/null
@@ -1,54 +0,0 @@
-name: Downgrade
-on:
-  pull_request:
-    branches:
-      - master
-    paths-ignore:
-      - "docs/**"
-  push:
-    branches:
-      - master
-    paths-ignore:
-      - "docs/**"
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1.10"
-        group:
-          - Core
-          - Downstream
-          - Wrappers
-    steps:
-      - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@v2
-        with:
-          version: ${{ matrix.version }}
-      - uses: julia-actions/julia-downgrade-compat@v1
-      - name: "Install Dependencies and Run Tests"
-        run: |
-          import Pkg
-          Pkg.Registry.update()
-          # Install packages present in subdirectories
-          dev_pks = Pkg.PackageSpec[]
-          for path in ("lib/SciMLJacobianOperators", "lib/BracketingNonlinearSolve", "lib/NonlinearSolveBase", "lib/SimpleNonlinearSolve")
-              push!(dev_pks, Pkg.PackageSpec(; path))
-          end
-          Pkg.develop(dev_pks)
-          Pkg.instantiate()
-          Pkg.test(; coverage="user")
-        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
-        env:
-          GROUP: ${{ matrix.group }}
-      - uses: julia-actions/julia-processcoverage@v1
-        with:
-          directories: src,ext,lib/SciMLJacobianOperators/src
-      - uses: codecov/codecov-action@v4
-        with:
-          file: lcov.info
-          token: ${{ secrets.CODECOV_TOKEN }}
-          verbose: true
-          fail_ci_if_error: true
diff --git a/test/23_test_problems_tests.jl b/test/23_test_problems_tests.jl
index 20c2c3b5c..d740a87c2 100644
--- a/test/23_test_problems_tests.jl
+++ b/test/23_test_problems_tests.jl
@@ -119,7 +119,7 @@ end
         broken_tests[alg_ops[1]] = [1, 5, 11]
         broken_tests[alg_ops[2]] = [1, 5, 8, 11, 18]
         broken_tests[alg_ops[3]] = [1, 5, 6, 9, 11]
-        broken_tests[alg_ops[4]] = [5, 6, 8, 11]
+        broken_tests[alg_ops[4]] = [5, 6, 8, 11, 16]
     else
         broken_tests[alg_ops[1]] = [1, 5, 11, 15]
         broken_tests[alg_ops[2]] = [1, 5, 8, 11, 18]