Have tried disabling all addons, pushing tab, abandoning and picking up the quest, and re-logging. Please fix.
i’ve had this happen A LOT. always at the worst times or tryin to tag a rare. Couldnt attack Nathanos blightcalled today. the other day I couldnt tag Bronjahm. It definitely needs to be looked into and fixed, how are we supposed to play a game when we can’t even attack. In the meantime, try to AOE near your target to get a tag or force it to work, helped me once.