Windows b9835
Aaaah I typed a long post and it was really convoluted and confusing trying to explain the details of what happens, and then I realized the root of the problem I think.
It was changed so that if something in "when drawing" is unchanged, then it won't redraw it every frame, right? So now when you switch between fullscreen, everything that isn't redrawn stays the same size which makes it wrong.
Also I don't know if this is the same issue or a separate one, but in the second attachment it shows when you enter fullscreen the background colour is the wrong size too. But weirdly it doesn't happen in every scene.
Aaaah I typed a long post and it was really convoluted and confusing trying to explain the details of what happens, and then I realized the root of the problem I think.
It was changed so that if something in "when drawing" is unchanged, then it won't redraw it every frame, right? So now when you switch between fullscreen, everything that isn't redrawn stays the same size which makes it wrong.
Also I don't know if this is the same issue or a separate one, but in the second attachment it shows when you enter fullscreen the background colour is the wrong size too. But weirdly it doesn't happen in every scene.