Can't release on final boss, M+ Mists of Tirna Scithe

Just wiped to the final boss in a 15 M+ Mists of Tirna Scithe but after the boss disappeared we were unable to release. After the boss came back we still weren’t allowed to release. We all logged out and came back online and still unable to release. We then all left the group to get kicked out of the instance one by one and then reformed our group and were unable to enter the instance because an “encounter in progress”. It could’ve been Spirit of redemption, or the necrolord bonesmith thing that bugged it because we had both, but after we wiped we were never aloud to release and after we managed to teleport out we were unable to enter the instance to finish the key .

The boss did despawn when we wiped and reset perfectly fine, however the trigger that keeps you from releasing after engaging a boss never reset.

This just happened to us in a +15 MoTS just now, too. We wiped and after the boss reset noone was able to release. We all tried logging, closing client, logging into alts and even running the command /run RepopMe() to attempt to release spirit. Our group comp was 4 venthyr; Resto druid with theotar, fury warrior with Nad, DH with Nad, and Frost mage with Nad and then finally my Kyrian Pelagos Brewmaster. After we logged back in we were all laying right after the first boss near the 3rd Lieutenant.

Just happened to us in a +14. Log out, restarting, leaving group, etc, none worked. Finally the key holder, who had left the group and tried to zone back in was allowed to, but it was a new dungeon. He then had a +13 key in his bags (at least one player was still in the instance).