UI Issue on Nightly using vertical tabs

Paulbath8 — Sun, 06 Sep 2026 00:47:12 GMT

When clicking the New Tab button, it dissapears behind the UI and does not push the stack up

I am using nightly: 155.0a1 (2026-08-06) (aarch64)

Thank you for all you do! Love Mozilla, the mission and dedication to ethical software development in a world tough to do it in!

The nightly builds have been very great visually and I think it is really nice to use as well. Love the new UI and my matrix extension now runs along the side and top really adding to the immersion. While were are at it, could we adjust the border of the tab areas around the extensions?

The Matrix Extension: https://addons.mozilla.org/en-US/firefox/user/15257270/?utm_source=firefox-browser&utm_medium=firefox-browser&utm_content=addons-manager-user-profile-link

topic UI Issue on Nightly using vertical tabs in Discussions

UI Issue on Nightly using vertical tabs