ToolBelt mod is a part of one of my modpacks in development, I've recently noticed that it's duplicating upon death. You die, belt stays in it's rightful spot, and another gets created and placed on the floor along with the stuff you've lost. Only thing that remain is the toolbelt in your inventory after the death happens. It should just drop, but some how the slot is not allowing that.

Full Mods List:
CreativeCore
ItemPhysic
FoamFix
Antique Atlas
AstikorCarts
Just Enough Items
Quark
AutoRegLib
BackPack
Better Nether
Batter Placement
BiblioCraft
Blockcraftery
Block Drops
Guide API
Blood Magic
Bloodmoon
BuildCraft
Burning Torch
Camouflaged Creepers
Carry On
Chisel
Extended Renderer
CoroUtil Library
Extended Mod Config
DarknessLib
Doggy Talents
Dynamic Lights
Dynamic Surroundings
Dynamic Trees
Enhanced Visuals
Zero CORE
Extreme Reactors
Eyes in the Darkness
Fancy Block Particles
Fast Leaf Decay
Crayfish Furnature Mod
Grue
Hardcore Darkness
Inventory Tweaks
JEI Intigration
JJ Skill
Just A Raft Mod
Just Enough Resources
Lycanites Mobs
Malasis Doors
Mantle
Malasis Core
Mine Colonies
MobAmputation
Mo' Bends
Mutant Beasts
Modern Warfare 2.0
OMLib
Open Modular Turrets
Pam's HarvestCraft
Railcraft
RPG Loot
TiffitLib
Sanity
SBM Jukebox
Smart HUD
Smooth Water
Spartan Weaponry
Tinkers' Construct
Tinkers' Complement
Tinker's JEI
TipTheScales
ToolBelt
Unloader
Varied Commodities
Waystones
Worley's Caves
What's That Slot
Zombie Awareness
ReAuth
Midnight
Weeping Angels
Mystical Lib

EternalDusk on Technic starting the 1st of May if anybody needs to download the exact modpack to re-create the glitch.