User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:64.0) Gecko/20100101 Firefox/64.0 Steps to reproduce: This is a followup to bug no. 1310948 (https://bugzilla.mozilla.org/show_bug.cgi?id=1310948) that I had some comments on. The story goes like this: Version 52.9.1 (64-bit) and earlier, on Mac OS Mojave (and several versions before) Lightning Extension installed and active Several Google Calendars set up, using "CalDAV" (more on this later) Launch Thunderbird Actual results: After I launch Thunderbird it proceeds to use 100% CPU and nothing happens until 15 minutes (consistently) later, prompting for the Master Security Device password. After this, everything works fine. Expected results: If I disable the Lightning extension and reboot, then Thunderbird starts up immediately, prompting for the master password. This should happen with the extension enabled - we can't realistically expect it to connect to these servers without first unlocking the password db, so it must be something that happens before negotiating the connection to the calendar servers. My previous suspicions were about message indexing (see the prior bug), but since Thunderbird starts up with no issue when Lightning is disabled, I think that is not the problem here. This problem does not occur when there are no CalDAV servers configured in Lightning. Please let me know if I can provide more details. Thanks for looking.
Severity: normal → major
Component: Untriaged → Provider: CalDAV
Product: Thunderbird → Calendar
Version: 52 Branch → unspecified
Status: UNCONFIRMED → RESOLVED
Closed: 14 days ago
Resolution: --- → WORKSFORME
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