Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
doesn't hide in status bar Rated 3 out of 5 stars
Option to prevent display in status bar is ignored.
edit: Windows XP x32 and Windows 7 x64, Firefox 6.02
Thanks for the information. This bug is fixed in new version. It will be available to download as soon as FF approves it.