Minecraft Version: 1.20.1

Forge Version: 47.2.1

Mod Version: 1.3.0

Single Player or Server: And

Describe problem (what you were doing; what happened; what should have happened): Xp is clearly not preserved in the tomb. When I retrieved my item, Xp suffered significant losses

Log file link: Not have

Video/images/gifs (direct upload or link): Not have

If your bug is related to anything causing LAG you need to measure the lag by taking a sample https://minecraft.curseforge.com/projects/sampler