System: Windows 10 Pro, 64-bit [happened before on Win7x64 Pro as well] Thunderbird: 60.9.0 (32-bit) [the issue has been occurring for many months] Lightning: 6.2.9 Calen…
System: Windows 10 Pro, 64-bit [happened before on Win7x64 Pro as well]
Thunderbird: 60.9.0 (32-bit) [the issue has been occurring for many months]
Calendar is fully local (no Google Calendar or the like)
Installed extensions: Expression Search / Google Mail UI; FiltaQuilla; Identity Chooser; ImportExportTools; Lightning; Mailbox Alert; Search Results Sort By Date Not Relevance; ThreadVis; Unread Badge;
Possibly the same issue: https://support.mozilla.org/en-US/questions/1257365
Every now and then, after a Thunderbird restart [e.g., due to a Windows restart], the calendar is missing. The extension is still listed in the corresponding tab and marked as enabled but I cannot open the calendar tab. Neither via the menu nor via the shortcut CTRL+SHIFT+C.
My workaround in this case is to disable the extension, restart Thunderbird, re-enable the extension and, once again, restart Thunderbird. So far, this has always worked. Since the issue occurs quite regularly, I would like to fix it.
Originally, I used Thunderbird Portable but have now moved my profile to a non-portable installation. This did not fix the issue. I have also disabled all extensions, to no avail.
Unfortunately, I do not notice anything that the issue correlates with. It feels random. I just now restarted Thunderbird a few times and everything was OK. So I cannot easily test any possible fixes; it may take a week to occur. Or a minute.
Can you propose something for me to try to fix this issue? I would like not to switch to the new Thunderbird [68.1.0] as almost all of my extensions are not compatible with it. I'm not sure but I think that the issue has survived the last upgrade as well. Either this is a "real" bug or my profile is borked.
[Offtopic] Is there no single line break in this forum? Everything gets stuffed into one line. Only a double line break works, but this also creates a double line break on screen.