Boss dies after player death, loot disappears and death animation repeats (Mausoleum of the Praetor)

Hello, I ran into a strange situation that looks like a bug while fighting the final boss in Mausoleum of the Praetor.

During the fight, the boss killed my character, but about two seconds after my death the boss also died from my damage over time. I clearly saw the boss death animation and multiple items dropping on the ground, including a short bow and some other loot. After respawning, I ran back to the boss arena. When I arrived, I saw the boss death animation play again, as if the boss was dying a second time. This time, however, the boss dropped only Draven’s Memorial key piece, and none of the other items I had seen drop earlier were there.

It looks like the boss death was visually triggered twice, but the loot from the first death was either lost or not properly registered. Since the items were clearly visible the first time, this feels unintended. I’m wondering if this can happen when a boss dies shortly after the player due to damage over time effects.

I’m also a brand new player to Path of Exile, so it’s possible this is normal behavior and I’m just not aware of it yet — if that’s the case, please let me know 😄

Has anyone else experienced something like this?