Thunderbird 143: all menu icons of all popups broken

[RealRaven2000]

Testing with thunderbird beta 143.0b1 - Thunderbird 143 breaks styling in a horrible way:

items with no icon and items with icon all now display an empty square. This means that the css rule list-style-image is now non functional, possible caused by Mozilla removing menu code bit by bit.

[RealRaven2000]

I raised https://bugzilla.mozilla.org/show_bug.cgi?id=1984742 for this.

Also wrote some quick-fix patched version:

QuickFolders-mx-6.12.1pre20.zip

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To install version above download zip file and drag the file into Thunderbird Add-ons Manager (do not extract contents, it won't install like that)

[RealRaven2000]

Fixed in 6.13 - Published 17/09/2025

[RealRaven2000]

Reopening issue. I assumed it was fixed but apparently it was just the (more general) rules from my other Add-on SmartTemplates which fixed the "box" issue globally in Thunderbird. So users without SmartTemplates still experienced the issue. Most apparent in the quickJumop menu, but also some items on the current folder context menus and recent folders - Screenshots from Thunderbird 144.0b1.

[RealRaven2000]

I was messing with the style sheets a little, decided to load special sheet for Tb 143 and later that should fix the icons:

QuickFolders-mx-6.13.1pre12.zip

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To try out this version, download the zip file and then drag it into Thunderbird Add-ons Manager (without extracting)