I was killing Abby Demons in the slayer tower and my supply has ended. I thought if I die, I would just run back and get all my items back. A quick route to full status restore. When I did died, I ran back on time but my items were not there. Used another alt acc to come see if the items will be visuable but sadly it is not. Items I have lost are Abby Dagger, Tent Whip, DFS, fury, D boots, 5k fire runes, 20k nats, and some other items. I decided to test this area again with 1-2 junk items in my inventory to be lost upon death. Long and behold, same thing happened. So I decided to do 1 last test, acc #1 and acc #2 are placed in the same area. Acc #1 dies by an abby demon and runs back in time to which no items were to be found. However, acc #2 can see the items after the dropped items become visible.
Thanks for reporting, items will be refunded and we'll look into this bug. EDIT: Remind me in-game haha