Some Mondays are quiet, others are busy. Yesterday we had a very busy day fixing these bugs:
- Edit headers not working for local folders with maildir storage.
- Developer Toolbox not working in localised builds due to a repack error.
- Custom icon not working on about box and some other panels.
- Disappearing new lines in plain text edit. We picked up the report from a newsgroup. This was a bug in the upstream Mozilla editor.
- Account colours not respecting the preference for "full row colour" due an error in rebasing our patch to the 140 codebase.
We provided "latest build" versions of the current version 140.3.0, so affected users can use a fixed version straight away.
In the context of testing Edit headers, we discovered and upstream Thunderbird bug which led to the second edit on the same IMAP message not being reflected correctly in the message list and header pane. A regression in the Thunderbird 140 codebase, it was working in 115 and 128. The add-on Header Tools Improved is also affected. That bug we didn't manage to fix yet. (Update 28 Sept. 2025: Fixed!)