http://bugs.winehq.org/show_bug.cgi?id=24699
A Wine user RandomAccountName@mail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Component|-unknown |shell32
--- Comment #5 from A Wine user RandomAccountName@mail.com 2011-09-21 01:51:17 CDT --- Still present in wine-1.3.28-421-gb615335.
This bug doesn't occur if native shell32, shlwapi, and comctl32 are used. Native shell32 can't be tested here without the other two, but using only native shlwapi and comctl32 brings back the bug, so it seems to be a shell32 problem.
That said, it might be worth noting that using only native comctl32 seems to delay the crash. After clicking the close tab button, the program crashes immediately while using builtin comctl32, but it switches to another tab before crashing with native comctl32... the backtrace looks about the same either way, though.