Nostalrius Begins - Quality wow vanilla realm (1.12)

Hey everyone, I have a hudge problem: I leaved a group and they were in combat but I have a bug, I am in combat mode, I tryed to quit (alt+f4) but it isn't working, help me please! I tryed to /reload and to unstuck with the "?". What can I do ?

Thanks.

I can confirm the same issue happend to me Saturday 2015-11-14.
/console reloaui did not work.
Forced client logg off, (1-4 minutes) still same issue...