Can't scroll up in the right message panel

[SimonBrandner]

[DantrazTrev]

Seems like the bug occurs when the timeline is backpaginating.
Probably has something to do with not passing the added onUserScroll props for the FilePanel which was not there in earlier builds and is used in ScrollPanel.js for the wheel scroll?

If anyone else is not working I would like to take this up

[SimonBrandner]

If anyone else is not working I would like to take this up

Sure, go ahead!

[DantrazTrev]

Update:
Things probably regressed here matrix-org/matrix-react-sdk/pull/6079 . Specifically due to the relocating of shouldComponentUpdate from TimelinePanel to RoomView which causes the scroll component to be rerendered at every state update hence when the onCheckupPrefill is called when we scroll close to the top and backpaginating is set to true the ScrollPanel resets, also if you change any parent state similar change is observed

Also when there is a new message in the timeline it resets , which is weird and unrelated.