Strongbox glitched due to revival of betrayal npc.

so because the betrayal npc's if they happen to ever die near a strongbox and that said strongbox revives nearby dead monsters with onslaught it can break the strongbox so it will never open.
I cleared my area I freeze everything so it shatters yet jun executed a betrayal member near the strongbox only to cause it to revive but become a unkillable npc that cant move next to the box, thus making the strongbox unable to open due to one mob still being alive and also keeps 1 mob alive on the map.

https://gyazo.com/f0c54d29ff91471e4480ffdc52efa4ae

is a screen grab of the strongbox and jun with the betrayal npc standing by as a revived npc(all bloody) on the left with 1 monster left on the map and i spent a good 10 mins searching everywhere and the only npc i could find was by the strongbox. rip that diviner's lol

just happened to me as well.

https://i.imgur.com/yWW7J0A.jpg