The workaround seems to 'fix' Thunderbird 91.1.0 Fedora 34 (thunderbird-91.1.0-1.fc34.x86_64). I ran the performance profiler before the change with and without add-ons enabled and saved the respective json files along with screenshots from the 3 profiler tabs if anyone wants/needs them.
The workaround seems to 'fix' Thunderbird 91.1.0 Fedora 34 (thunderbird- 91.1.0- 1.fc34. x86_64) . I ran the performance profiler before the change with and without add-ons enabled and saved the respective json files along with screenshots from the 3 profiler tabs if anyone wants/needs them.