I recently was taking on an A.M.A.N Trove BCNM fight, when another player showed up in the same BCNM as me. We were not in a party, in fact we both used separate orbs and were playing Solo. The other player had opened a chest and realized that we were in the same room and was able to open my chests. We didn't know what was going on, and if this was part of the BCNM. Either way, it was an unfair use of my Mars Orb to know that someone else had open chests for me, and I did not get to play the actually BCNM solo. I would like for this to get looked into, as this bug is weird and could have cost me a Mars orb and my BCNM.