diff --git a/generator/runtimes/fastly/data.json b/generator/runtimes/fastly/data.json
index 8703dca5..a64927b3 100644
--- a/generator/runtimes/fastly/data.json
+++ b/generator/runtimes/fastly/data.json
@@ -84419,7 +84419,7 @@
       "exposure": "Window"
     },
     "result": null,
-    "message": "threw Error: No backend specified for request with url http://127.0.0.1:7676/favicon/favicon.ico. Must provide a `backend` property on the `init` object passed to either `new Request()` or `fetch`"
+    "message": "threw Error: No backend specified for request with url http://127.0.0.1:7676/favicon/favicon.ico$­,!<\f. Must provide a `backend` property on the `init` object passed to either `new Request()` or `fetch`"
   },
   {
     "name": "api.ReadableStream.@@asyncIterator",
diff --git a/vendor/tests.json b/vendor/tests.json
index 2d255658..4e8a5467 100644
--- a/vendor/tests.json
+++ b/vendor/tests.json
@@ -44369,6 +44369,18 @@
     "code": "bcd.testCSSProperty(\"anchor-name\", \"none\")",
     "exposure": ["Window"]
   },
+  "css.properties.anchor-scope": {
+    "code": "bcd.testCSSProperty(\"anchor-scope\")",
+    "exposure": ["Window"]
+  },
+  "css.properties.anchor-scope.none": {
+    "code": "bcd.testCSSProperty(\"anchor-scope\", \"none\")",
+    "exposure": ["Window"]
+  },
+  "css.properties.anchor-scope.all": {
+    "code": "bcd.testCSSProperty(\"anchor-scope\", \"all\")",
+    "exposure": ["Window"]
+  },
   "css.properties.animation": {
     "code": "bcd.testCSSProperty(\"animation\")",
     "exposure": ["Window"]
@@ -50541,18 +50553,6 @@
     "code": "bcd.testCSSProperty(\"position\", \"fixed\")",
     "exposure": ["Window"]
   },
-  "css.properties.position-animation": {
-    "code": "bcd.testCSSProperty(\"position-animation\")",
-    "exposure": ["Window"]
-  },
-  "css.properties.position-animation.normal": {
-    "code": "bcd.testCSSProperty(\"position-animation\", \"normal\")",
-    "exposure": ["Window"]
-  },
-  "css.properties.position-animation.magic": {
-    "code": "bcd.testCSSProperty(\"position-animation\", \"magic\")",
-    "exposure": ["Window"]
-  },
   "css.properties.position-try": {
     "code": "bcd.testCSSProperty(\"position-try\")",
     "exposure": ["Window"]