Open mIRC.
Maximize status window if not maximized.
/server irc.swiftirc.net (or any network)
/join -n #aaaa,#bbbb,#cccc,#dddd,#eeee
Click Tile Horizontal
In the treeview:
Click #aaaa
Click #bbbb
Click #cccc
Click #dddd
Click #eeee
Maximize #eeee channel.
Click Tile Horizontal. (Channel Windows seem to cycle really quick) The bug?????
Click Tile Horizontal.
The MDI window for the #eeee channel is missing its titlebar.
Maximize any channel or status window.
Duplicate Icons.
Tested on Windows 7 and XP.
maroon tested on Windows 7 and got the same bug.
https://i.imgur.com/8OcVuwA.png
