[Bug 1945368]

[Vseerror]

Apologies, but this bug report has become unmanageable - it is too
difficult to distinguish what is add-on specific from what is not, and
therefore progress is going to be impossible.  So we are going to close
this bug and start fresh in order to help move your individual issues
forward.

If you have the provider add-on installed and you are still having
trouble, please file an issue at https://github.com/kewisch/gdata-
provider

If you do NOT have the provider add-on installed and you have a bug
report that was duplicated to this bug, if you still have a problem then
please reopen that original bug report.

Otherwise, if you have a problem and you do NOT have the provider add-on
installed, please file a new bug report.

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https://bugs.launchpad.net/bugs/1945368

Title:
  Thunderbird 91 forgets default calendar

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