In PvP, a player will leave combat if they have not attacked or been attacked for 6 seconds, or all the enemy characters that have attacked you are killed.
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там же:
Some classes have abilities that remove them from combat instantly. However, if they are dotted they will usually be brought back into combat the next time they take damage. Note that these abilities no longer remove you from combat during Boss Fights (only at the end of wipes if you time it correctly).
или это уже корректно работает?