Problems with Thunderbird and saving emails to sent-folders

[tarjei]

Hi,

Many of my users are having problems saving sent emails to the sent 
folder in Thunderbird.

This is a known problem in Thunderbird and partly documented here:
https://bugzilla.mozilla.org/show_bug.cgi?id=206408

What I am wondering about is if anyone can give me some advice on how to 
configure cyrus and /or thunderbird to reduce the impact of the bug.

Kind regards,
Tarjei