Freron MailMate

Hello,

Today I deleted a conversation from mailmate. The conversation became red (the letters), and then disappered from the all messages list. However I changed my mind and undid the deletion (cmd+z). The messages subsequently reappered. For some reason i felt like deleting the messages again, and then tried to restore them again. However this time the restore did not work. I have to say that the deleting restoring took some time, as I guess because mailmate was communicating with the server. I could nowhere find the message anymore, not in trash, junk, and also not in my webmail client. I could only recover the message by restoring from a backup.
I however could not reproduce this behaviour, because usually when I delete /restore a message it is virtually instant (the message dissapears directly, and does not become red first).

I realize of course that I was testing the software to a purpose for what it was not inteded, however I was however a bit suprised that the message was completely dissappered.

Any idea what might have happened?