[Impeller] ListView in CupertinoPageScaffold becomes unresponsive in Simulator. about flutter HOT 7 OPEN

We can go ahead and leave this open for tracking. The cherry pick release for that bug hasn't gone out yet.

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So there is a simulator specific bug we're working on cherry picking here: flutter/engine#53205 . That may contribute.

That said, simulator performance is far from a priority. If something is really misbehaving we can try to take a look, but apples own profiling tools don't work on simulators.

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thanks @jonahwilliams yes I'm working on a last-gen intel MacBook pro. Seems related.

I guess for now I'll develop with --no-enable-impeller and hope for the best on release

Here are two videos of the affected app on the same screen, the difference is night and day.

Skia: https://youtu.be/6Fln2OXwMpk
Impeller: https://youtu.be/9liioCw6wwA

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The looks similar to the rendering bug I fixed in 6bdebcf58d , but you seem to be on an engine revision after that change. Can you confirm the framework revision listed in the issue report is correct?

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I switched back to stable. Currently running:

✗ flutter --version
Flutter 3.22.2 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 761747b (3 days ago) • 2024-06-05 22:15:13 +0200
Engine • revision edd8546116
Tools • Dart 3.4.3 • DevTools 2.34.3

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Sorry, I'm confused:

1. Is the video you posted from stable or master channel?
2. Are you observing similar performance issues on master channel?

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Sorry to confuse. The two videos from today are from my normal working environment. I thought you'd seen what you needed to see so went back to work mode. I added the videos to illustrate my original point.

If I see an update to 3.22.3 or higher, I'll test again and repoen if necessary.

Have a good weekend.

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