Armour Modifier not removed after armour is removed

[ZeusTheDev]

Server Version and Software
Paper 1.16.4

Description
Armour Modifier not removed after armour is removed. In my case this was a helmet.

How To Reproduce
Steps to reproduce the behaviour:

1. us the /sk armor modifier add command to add a modifier to the helmet.
2. Equip the helmet.
3. Remove the helmet.

Expected behaviour
The stat specified in the modifier should increase when equipping the helmet and decrease after removing it.
Actual behaviour
The helmet increase the stat when equipped and does not decrease it when it is removed.

[Archy-X]

I cannot reproduce this issue, it could be a plugin incompatibility

[ZeusTheDev]

Alright, I'll do some more testing and see if I can figure out what's causing the issue.

[Archy-X]

Closing for now, reopen if you have more info