I have been having this issue for awhile. Whenever I kill an enemy or boss sometimes the text for the item wont appear over it on the ground. Example “Ancestor legendary shield” My room mates account which i loaded on my computer does not have this issue only my account. Just to make sure it wasnt my pc I have done all troubleshooting steps possible. reinstall drivers, reinstall game and even reinstalled operating system. This can be bothersome when you are doing a tormented boss and it happens the items drop so close together you cant make any of them out unless you pick them up. Like i said it only does it on my account and its not all the time but it is pretty consistent and no other account on this computer has the issue at all. Im sending this to support as well just in case it is account related but thought i would post here as I am open for solutions that I have not already tried.
Did you check your options?
Yes and if it was option related it would do it all the time and not just randomly
You might be pressing the button that toggles item labels. Try changing the key to something further away from your hand.