Description of problem:
When Stellarium is changed from full-screen to windowed for the first time in a session, the window appears in the top-left corner of the screen with 0 width and just enough height for the title decoration.
This window may be drag-resized to something more usable, but the Stellarium view is drawn over the window's title decoration. To move it one has to hold down the Super key and drag the window from the interior.
Returning to full screen and then going windowed again results in a correctly-windowed view.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Start Stellarium full-screen (as default) under GNOME 40.
2. Exit full-screen.
Tiniest window in top-left.
Sensibly-sized window with decoration present.
Tested on both i915 and amdgpu.
I can reproduce this. Have you tested his under another desktop environment?
Doesn't happen under KDE Plasma.
Good information. Sounds like a mutter bug, so reassigning there.
(In reply to Gwyn Ciesla from comment #3)
> Good information. Sounds like a mutter bug, so reassigning there.
OK -- FYI I tried with the latest mutter git 96f2da9f, still happens.