diff --git a/packages/jspsych/src/timeline/Timeline.spec.ts b/packages/jspsych/src/timeline/Timeline.spec.ts
index 73012cb99d..88688c37f5 100644
--- a/packages/jspsych/src/timeline/Timeline.spec.ts
+++ b/packages/jspsych/src/timeline/Timeline.spec.ts
@@ -75,23 +75,6 @@ describe("Timeline", () => {
       expect(timeline.children.length).toEqual(2);
     });
 
-    it("respects dynamically added child node descriptions at the start", async () => {
-      TestPlugin.setManualFinishTrialMode();
-
-      const timelineDescription: TimelineArray = [{ type: TestPlugin }];
-      const timeline = createTimeline(timelineDescription);
-
-      const runPromise = timeline.run();
-      expect(timeline.children.length).toEqual(1);
-
-      timelineDescription.splice(0, 0, { timeline: [{ type: TestPlugin }] });
-      await TestPlugin.finishTrial();
-      await TestPlugin.finishTrial();
-      await runPromise;
-
-      expect(timeline.children.length).toEqual(2);
-    });
-
     it("dynamically added child node descriptions before a node after it has been run", async () => {
       TestPlugin.setManualFinishTrialMode();