Thunderbird stops reacting to all keyboard input after deleting a message under certain circumstances, as described in the upstream bug report. Reproducible: Always Steps to Reproduce: Steps to reproduce: 1. Mail yourself a first test message, a second test message and reply to the second message; 2. Go to menu View | Sort by | Threaded 3. Go to your inbox and select the first message and press F6 until the message pane gets focus; 4. Press delete to delete first message; 5. Use any keyboard shortcut or accelerator key. Actual Results: Nothing happens. Expected Results: The given command is executed.
This will be tracked upstream, this is gonna effect very minimial amount of users.
(In reply to comment #1) > this is gonna effect very minimial amount of users. I was not aware that "sort by thread" was such a minimally used feature, since I found it so useful. (But now I had to disable it because of this bug, that came with the "thread summary" feature.)