Tested on iPhone X, 12.1.4 - Flutter Stable:
(see Video)
https://youtu.be/1mdM_Uv574w

When switching between apps (or launching the app), animations are jittering at the beginning - in particular, when scrolling through lists. I didn't test it on other devices. Experienced it both with the inKino app (made by a Googler) and my own app. Same is true on startup. Any idea on that?