Hey yeah! Wow, that makes things go a little smoother. It's definitely a bug in Thunderbird, and thanks for submitting the bug report, but at least there's a switch. Now I remember why I use open source software :-)
Timo Sirainen wrote:
On Thu, 2005-03-03 at 13:26 -0800, Josh Burley wrote:
Along that same line, Thunderbird was trying to put folders into the Trash folder upon deletion. Which wasn't allowed (as far as I can tell) because the Trash folder was a leaf node, and could only contain messages.
Server settings -> Advanced -> Uncheck "Server supports folders that contain sub-folders and messages" and then it works.
It'd be simple for Thunderbird to figure that out itself. Added to bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=284933