unopened drop weapons

So the reason for this is not that the M4 is still locked for me, i wrote this title just because i thought the reason for this bug is using the locked weapons by picking it, i dont even know what is "slide bug"

if you press C while shooting your gun, it does the slide bug, and if you use the slide bug, your weapon gets holstered and your active weapon is set to fists, with a message saying don't abuse (don't know exactly what it says tho)