I can agree with Tomas, I just died recently in my friend's server (running on Aternos) in the nether. I rushed to prepare and grab all my items as fast as possible and made it in under 3 minutes, I tracked my death coordinates exactly. I died by crashing into a wall with an elytra and the items fell onto the fortress road, no lava or fire or anything. After I got there, nothing was there. Completely gone to oblivion. (JE 1.15.1)
Edit: On a second note, Aternos has poorly loading worlds for a free server service which adds to the issue of any server that loads slowly and poorly where it causes dropped items and other entities (such as armor stands) to disappear suddenly.
I can agree with Tomas, I just died recently in my friend's server (running on Aternos) in the nether. I rushed to prepare and grab all my items as fast as possible and made it in under 3 minutes, I tracked my death coordinates exactly. I died by crashing into a wall with an elytra and the items fell onto the fortress road, no lava or fire or anything. After I got there, nothing was there. Completely gone to oblivion. (JE 1.15.1)
Edit: On a second note, Aternos has poorly loading worlds for a free server service which adds to the issue of any server that loads slowly and poorly where it causes dropped items and other entities (such as armor stands) to disappear suddenly.