barrels glitching (deep storage unit)

[PhanaticD]

Description (Required)

Cargonet glitches out barrels, a block can be placed in the empty space where it was previously, restarting server caused the display icon to float where it was but using worldedit to set the diamond block causes it to drop two of the blank named glass panes

Slimefun/Slimefun4#1949
according to the developer of the main plugin this addon is for this plugin has all these issues, please fix these

Steps to reproduce the Issue (Required)

I do not have steps to reproduce it unfortunately

Expected behavior (Required)

not to glitch out

Server Log / Error Report

initial error, was spamming console: https://pastebin.com/raw/MHt50JAG
error after a restart and worldedit a diamond block then breaking it: https://pastebin.com/raw/HBvGE8Pf

Environment (Required)

I am using slimefun as of my PR from earlier so Slimefun/Slimefun4@dc351f5

• Minecraft Version: 1.14.4
  https://gyazo.com/23f69ab9cf51410270541099ae72b3cd