Trying to add a signature stored in a file via "Message -> append signature" fails. It is just nothing done. If I click "Edit" to edit the signature-file, an editor opens. I'd assume the file is found and accessible. What I'd awaited: appending signature What really happens: nothing
The account you've set the signature in, and the account you have selected while composing the email, seem to be different in this case. Please confirm they're the same.