When the last character leaves the boss map and another character immediately enters by holding the up arrow key, the previous instance may not reset properly. In this case, mobs and dropped items from the previous run still remain in the map. Additionally, there is no timer, and the boss cannot be re-summoned. From the perspective of a character outside. Although the gate appears to be closed, it is still possible to enter. Testing shows that even a character who was not part of the previous run can enter the map. Since exploiting bugs is not allowed, I did not test whether it's possible to stay inside for more than 30 minutes in this state. However, because the timer disappears, it may be possible to occupy the entire boss map. From the outside, the gate appears closed, so other players won’t realize that someone is occupying the map. Additionally, if you leave the map immediately after triggering this bug, it does not count as an attempt. But if you stay too long, it will count, similar to Krex. However, in this case, the boss cannot be summoned at all. Since Update #95.3 added a 30-minute timer to Papulatus, I believe that any bug allowing players to stay in the map maliciously is a serious issue.