Tested on Win11 and MacOS

[Godiesc]

hi, your screenshots should be with bookmark-bar active, to see that sidebar. and for macOS you tested all the features, like tree-tabs to see how looks that, or just the base theme? if you just tested the base them you should add that after the macOS compatibility, like this:

[Bali10050]

Now I have tested everything, here are the screenshots:

Conclusion:

Windows 11

Works perfectly

MacOS

firefoxone.tree_tabs_style causes some serius issues

when the left sidebar is enabled, there is a visual overlap with the traffic light buttons

[Godiesc]

Thanks for testing in those OS, the information was added but I can't 'merge this pull request', I added your username to the compatibility section to give you the credit. 🤗