Firefox 137 Nightly - Theme completely broken, -moz-bool-pref changes.

[dreadbalaur]

Already looked at the Wiki?

Yes

Describe the Issue

I really hope that this is a temporary change and they will walk back from it, but the latest Nightly build for 137.0a1 (Feb 12) has broken the theme. Not just tab autohide, all user.theme variations and many ultima configs no longer work.

Expected Behavior

Platform/Desktop

Windows

Web Browser

Firefox

If Other Browser was selected, specify here:

No response

Is your browser updated to the latest version?

Yes

Picture/Video of the Issue

No response

[keatit71]

having same issue with latest nightly build

[soulhotel]

At first look, it seems they renamed and/or added more elements (wrappers) into the source. The theme is trying to apply styles to elements that were once named like "This", but now those elements might be called "This in That". I'm sure everything can be restored after I go through every single file, match the source, and readjust for the additional wrappers added. This is all assumption though.

Fortunately, I finally got nightly 137 packaged, so I'll start working on it tonight. No time table for when it will be complete though. Use dev edition in the meanwhile.

Edit:

@media (-moz-bool-pref: " deprecated, changed to @media -moz-pref("

[soulhotel]

Almost everything has been restored to a functional state. But there is still a lot to be done in regards to the changes that come with Firefox's autohiding. For example, the second sidebar positioning is flawed, and the flaws can't be modified to well without causing error in the scripted behavior. Anyway..

• Choose between tabs on top or bottom
• Enable tab autohiding

2025-02-21.15-57-54.mp4

More video:

• Working with the resizable bar
• Sidebar autohiding
• Disabled vert tab bar

2025-02-21.15-54-22.mp4

Some about:config Settings Removed

ultima.tabs.autohide

^ replaced with sidebar.ExpandOnHover

ultima.tabs.width

^ tabs.width.huge, large, med, small - are no longer needed. sidebar can be resized via mouse-drag

ultima.disable.contextmenu.collapsing

^ function broken within 135-137 updates, will reach out via discourse to see if they can consider this in implementation.

Some about:config Settings Updates

sidebar.animation.expand-on-hover.duration-ms

^ This controls the animation speed for the vert-tab auto-hiding. The theme sets this to 200ms.

ultima.xstyle.tabgroups.i
ultima.xstyle.tabgroups.ii

^ You can disable these for the time being, there are changes in 135/136/137 that make the styling inconsistent. 137's default style is actually well designed.

ultima.xstyle.tabgroups.with.colormix

^ works.

[soulhotel]

Thank you @tthornton3-chwy btw.

[keatit71]

i'm using the fixed version of ultima which is nice but the new tab button isn't working on the sidebar i can only open a new tab with right click or double clicking. is this a bug of the theme or something to do with nightly?

[soulhotel]

This may just be Nightly, since i didnt make any changes to that button besides Italic Text and Pointer. There seems to be a lot of bugs aroudn the vertical tab in this update.

https://connect.mozilla.org/t5/discussions/firefox-sidebar-and-vertical-tabs-try-them-out-in-nightly/m-p/87361/highlight/true#M33460