We have to clear the image if there’s area that won’t be painted by the FrameView.
Created attachment 192143 [details]
Wait, the coordinates are mixed up.
Maybe we should just unconditionally clear the image — FrameView has the ability to have a non-opaque background, which would still be broken with the “if there’s area that won’t be painted by the FrameView” approach.
I think always clearing the image is fine.
Created attachment 192145 [details]