When using the MP-133 shotgun, if you fire off 1 shell (haven't noticed with more or not, as long as it isn't empty), and attempt to eject the shells, SOMETIMES, almost seems random, maybe 1/5 chance of happening (possibly shell count? and I am just not noticing), the shells will stay in the gun, not eject, and the gun will be 'frozen' until you put it away and take it out again.

Would be a brutal way to die if in a firefight, bugs like this are infuriating.