Fumbling weapons?

I attached a bayonet to a fusion rifle, but half the time I drop the thing on the ground when meleeing. Is this because it’s a bulky weapon, or maybe my dexterity is too low, or some sort of bug?

Whats the action text/chart say?

Possibly some interaction with it getting stuck?

Yeah, it’s probably it getting stuck in the thing you are stabbing.

Yep, it’s getting stuck. It usually 1 hit kills which made me think it was just falling on the ground. I was able to get it to happen with a bear, and the rifle would appear wherever I killed the bear which must mean it was stuck in him. Poor bear. A note in the log would be nice though, there is no text whatsoever when this happens.

Thanks everyone!