Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseDeveloper reply by John Bieling
Rated 3 out of 5 stars
I don't want to be ungrateful and blaming because of the 3 stars, but the addon doesn't work with Thunderbird 128.3.1esr. The add-on was installed without any problems, Thunderbird was restarted and the “Categories” icon with the three colored dots as a logo appears in the top right of the TB window. However, if you click on it, nothing at all appears in the pop-up window area, just a white background, there is nothing to see. However, if I right-click randomly on different areas of this empty white window, I see options for the existing categories, or I can send an e-mail and something like that. So something seems to be there, but you can't see it. Unfortunately, the FAQ link on the manufacturer's site leads nowhere, there is no FAQ. I couldn't find any information about this error. Who knows more about how to fix this? Thank you very much.
I assume you are using Wayland on Linux? Thunderbird 128 has some issues with Wayland. They pushed a fix in 123.3.2, but it may not be perfect. Other extension will show this behavior as well. See https://bugzilla.mozilla.org/show_bug.cgi?id=1905622
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