uber elder delayed drop

hello gamers, i killed the uber elder and he didnt drop his voidstone alongside his loot. after standing around for ~15seconds it dropped. here is a video link the bug report number is 888,836,154
https://streamable.com/gs8pg1

Yes, as a great farmer of Uber Elder, I can say with certainty that you died along with the elder. Whenever you die at the same time, or shortly before him, and click the "return to hideout" button, a 'bug' occurs where all items actually drop, and after about 15 to 20 seconds the watcher drops appear (if they exist). I recommend always staying on the death screen until the drop appears.