Cannot delete IMAP Mail-Folder in Trash

[Gabriel Kaufmann]

Hello,

I've noticed an annoying problem. Trying to delete a folder that has 
been deleted on IMAP and is moved to trash has problems being deleted. 
Thunderbird reports:
"Folder contains children" and stops there. Folder at first disappears. 
But after restarting Thunderbird they are still there and on 
Dovecot-Mailbox folder on the server the folders are also still present.

I'm using Dovecot 2.2.18 + Thunderbird + FS-Layout.

I already tried this workaround-mode:

> /protocol imap { //imap_client_workarounds = tb-extra-mailbox-sep //}/

    best regards

    Gabriel Kaufmann
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