Hi there! I started using Enigmail (currently V2.1.9) with TB (currently V68.10.0) on Linux Mint with gpg (GnuPG) 2.2.19. When I try to send an email, I (nearly most of the time) I get the error message popup that sending failed, because I choose to sign the email and the certificate was "not found or outdated". However, when I close the popup and hit send again, the email is sent without error message. In fact, I'm not sure if the email is signed in this case. (Looking at my sent folder, it seems...