Need to look up an annoying menu bug with #Firefox (on #Linux ):

Firefox menus which are larger than the screen - i.e. require scrolling - sometimes appear in the wrong place (top left), or don't finish fading in. Scrolling a menu is always laggy, or doesn't work at all.

Affects the main menu, and the "account" toolbar button. Right click menu also sometimes appears in the top left.

FF 147.0.2, installed via snap as per default on #Ubuntu 24.04.

"On Linux (Wayland) systems, certain popups and context menus will sometimes open in the wrong place, such as the top-left corner of the window. Firefox 147.0.3 has a partial mitigation for this problem and remaining instances will be addressed in a future release."
https://www.firefox.com/en-US/firefox/147.0.3/releasenotes/
Firefox 147.0.3, See All New Features, Updates and Fixes

Firefox