[Bug 1959747]

[6-valentin]

I confirm this on the most recent distributions of Arch Linux and
Thunderbird.

The suggested fix works to solve the sluggishness.

-- 
You received this bug notification because you are a member of Mozilla
Bugs, which is subscribed to Mozilla Thunderbird.
https://bugs.launchpad.net/bugs/1959747

Title:
  [upstream] Very high CPU and slow responsiveness in Thunderbird 91

To manage notifications about this bug go to:
https://bugs.launchpad.net/thunderbird/+bug/1959747/+subscriptions