(This might be a duplicate report, but i really don't care. This needs to be reported again)
1. Combat
2. Sometimes (actually like 4/10 or 5/10 times this happens), after u kill a creature or just get in combat, you stay in combat forever, instead of leaving combat after having killed the creature / being in a situation where u shouldn't be in combat anymore.
3. You should leave combat after say killing a boss/npc/player / healing a player or a creature, after a few seconds of not doing anything in PvP / healing / killing / dps'ing.
4. This bug has always been here, so from March 2013 - Present
5. x100, Cross, Fun
6. ∞/10
Fixing this bug will fix a ton of other bugs / problems, and definitely the most aids ones.