Suddenly cannot type while composing mail

When I am composing mails I randomly can’t type anymore. its not a complete freeze, I can close and reopen the compose window and continue from there.

I assume it might have todo with syncing drafts to gmail, but I cannot say if it happens with other accounts as well.

It happens quite often, sometimes I have to close and open a single mail ~10 times, sometimes I can compose mails just normally.

OS: Ubuntu / Pop!_OS 22.04 LTS
Mailsprin Version: 1.14.0