diff --git a/engine/src/flutter/lib/web_ui/lib/src/engine/frame_service.dart b/engine/src/flutter/lib/web_ui/lib/src/engine/frame_service.dart
index 5ec117cb8a..2e2dbf1cb4 100644
--- a/engine/src/flutter/lib/web_ui/lib/src/engine/frame_service.dart
+++ b/engine/src/flutter/lib/web_ui/lib/src/engine/frame_service.dart
@@ -120,8 +120,6 @@ class FrameService {
     required ui.VoidCallback beginFrame,
     required ui.VoidCallback drawFrame,
   }) {
-    _isFrameScheduled = true;
-
     // A note from dkwingsmt:
     //
     // We use timers here to ensure that microtasks flush in between.
@@ -133,7 +131,6 @@ class FrameService {
     // https://github.com/flutter/engine/pull/50570#discussion_r1496671676
 
     Timer.run(() {
-      _isFrameScheduled = false;
       _isRenderingFrame = true;
       _debugFrameNumber += 1;
       // TODO(yjbanov): it's funky that if beginFrame crashes, the drawFrame
@@ -142,10 +139,15 @@ class FrameService {
       //                "we did this before so let's continue doing it" excuse
       //                only works so far (referring to the discussion linked
       //                above).
-      beginFrame();
+      try {
+        beginFrame();
+      } finally {
+        _isRenderingFrame = false;
+      }
     });
 
     Timer.run(() {
+      _isRenderingFrame = true;
       try {
         drawFrame();
       } finally {
diff --git a/engine/src/flutter/lib/web_ui/test/engine/frame_service_test.dart b/engine/src/flutter/lib/web_ui/test/engine/frame_service_test.dart
index 7c689bec63..261bd4312c 100644
--- a/engine/src/flutter/lib/web_ui/test/engine/frame_service_test.dart
+++ b/engine/src/flutter/lib/web_ui/test/engine/frame_service_test.dart
@@ -136,8 +136,13 @@ void testMain() {
         },
       );
 
-      // IMPORTANT: scheduled, but not yet rendering
-      expect(instance.isFrameScheduled, isTrue);
+      // Even though the warm-up frame is scheduled the value of
+      // isFrameScheduled remains false. This is because, for reasons to be yet
+      // addressed, the warm-up frame can be (and indeed is) interleaved with
+      // a normal scheduleFrame request. See the TODOs inside the
+      // scheduleWarmUpFrame code, and this discussion in particular:
+      // https://github.com/flutter/engine/pull/50570#discussion_r1496671676
+      expect(instance.isFrameScheduled, isFalse);
       expect(instance.isRenderingFrame, isFalse);
       await frameCompleter.future;
       expect(instance.isFrameScheduled, isFalse);