Thanks Wayne. It was the same without Status Bar. I renamed my Thundbird settings folder and created a new user profile to record the performance profile: https://share.firefox.dev/4gPiw8G
This was on an x64 mac, but the arm64 mac showed the same behaviour. Thanks a lot for looking into this. It's not nearly as bad as when originally reported, personally I can live fine with how it is. Thunderbird is just amazing. Cheers! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1959747 Title: [upstream] Very high CPU and slow responsiveness in Thunderbird 91-102 To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/1959747/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs