I am a happy user of tags for messages. They stopped working since a recent upgrade to 45.0 or 45.1. The menu Message › Tag is expected to list the possible configured tags, but only contains one entry “0 Remove All Tags”. Selecting Message › Tag › 0 Remove All Tags on a message which already has tags, has no effect. The tags stay the same. The keyboard hotkeys 0, 1, 2, … to set or remove tags don’t have any effect. In the Tools › Options › Display › Tags, the existing tags are listed correctly. Previously created custom tags are listed correctly, too. In the dialog it seems I can create and edit tags, but that has no effect outside the dialog. My e-mails are stored on an IMAP server in case that makes a difference. Is there anything I can do to make the feature working again or debug the issue? I’m reluctant to re-install or revert to the standard set of tags, because I’ve used custom tags on messages and need them.