Width of the menu

[Albert1]

I suggest correcting the menu size in the theme.
It is very wide.

Even in density the compact mode is wide, even if it works !

[legrec14]

It seems that I encounter a problematic similar to yours.

Mine is maybe even worst, I also created a topic: https://connect.mozilla.org/t5/discussions/thunderbird-115-2-0-display-size-is-problematic/td-p/3942...