Forge 1.16.5 Weird Glitch

[BitMan00]

I made a server running a few mods on a custom made modpack, running Minecraft forge version 1.16.5-36.1.0. When someone on the server dies in either the end or the nether dimension, they cannot pick up the contents of their inventory. We are using these mods: Applied Energistics 2, Building Gadgets, Chiseled, Cofh Core, Cooking For Blockheads, Dank storage, Easy Piglins, Easy Villagers, Enviromats, Farming For Blockheads, Flux Networks, Iron Chest, Iron Furnaces, JEI, Journeymap, Just Enough Resources, mcjtylib, Mekanism, Mekanism Additions, Mekanism Generators, Mekanism Tools, Neat, Ore Excavation, RF tools Base, RF tools builder, rf tools power, rf tools storage, rf tools Utility, Spawn egg recipes, storage Drawers, thermal foundation, and valkyrielib. I am having trouble with this, and it is making the people on my server upset after constant restarts. I am not sure if this is a forge bug, or something I did wrong in the setup of the server. I remade the files 4 times with no luck. If possible please help me. Thanks. P.S I have tried all of the new versions of forge 1.16.5 and I am still having the same issue.

Edited March 30, 2021 by BitMan00
Modpack Clarification

[LexManos]

There isn't anything in Forge that would cause this. Quite possible one of the many random coremods you have installed. 

But your best bet is to read your logs see if there are errors being spit out and try and solve those.

[BitMan00]

Ok I will look at those. Thanks for your help. There have also been reports from my player base, that structures, chests, ore veins, etc. in these dimensions reappear/refill after leaving the dimension and coming back. Would this possibly be related? or completely different?

Edited March 30, 2021 by BitMan00
spelling errors

[LexManos]

There are a few things that could cause this.

Again, read your logs.

We can't do anything but randomly guess if you don't provide us with information.