I'm using Ubuntu 22.04.1/Wayland and FireFox Snap for Ubuntu 109.0 and I have two monitor bigger and smaller. After some time of using Firefox it's hang or something like that. When it happens I can normally open pages and use firefox except I can't move tab, resize window and when I move firefox from one monitor to second then it fit to half of screen (when move from smaller monitor to bigger) or window is behind monitor (when move FF from bigger monitor to smaller, you can see on screenshot what I mean). When I close FF and open everything works fine.