I’ve always been slightly annoyed by the android overscroll effect moving the top of the scrolling view so you can see behind it. Is there a nice way to avoid this?

I'd like to know as well. For now, I've worked around it by adding a dummy view with the same background under everything (Box).

Yeah, I’m going to that here. Probably going to drawRect something behind. But I’ve had the same issue with an image and the top of the screen for example.

The weird thing is, it doesn't always happen. And sometimes it happens even if it's not an overscroll, e.g. app bar collapsing makes a view anchored at the bottom to jump a bit.

I think it’s fairly consistent. The scrolling view just stretches, but for some reason it does so from a different origin than the top of the view. I guess they thought the feel was nicer that way, but there’s this edge case

If you're using compose, try by adding a background modifier to your scaffold...that should help