When trying to put F1 grenades with different skins into a chest it will use different slots for every different skin now.
This is new.
Normally the skin changed to the one that already was in the chest and all grenades got stacked.

The same happens to skinned satchels.

So the issue I have right now is if you skin something and stack it the iteam dosn't hold the skin. I noticed the carpets wont stack if you have diffrent skins. 
Do you know if anyone has a fix for stacked skined items?

I will look into this issue, thank you for the report.