Sometimes when using weapons such as the hunting shotgun or cowboy rifle that load an internal magazine one shell at a time, if that weapon is modified with a long tube to increase it's ammo capacity, Cass will get 'stuck' in a loop of the reloading animation indefinitely. It's unknown why this happens sometimes but not others, however telling her to switch weapons to melee and then back to ranged will 'fix' the problem, with the weapon now fully loaded. However, it can keep her out of a fight entirely and it's not appreciated when after a rough exchange you wonder "where were you on that one, Cass?" and turn around only to see her stuck in a loop. Provided you actually survived.
Occasionally in underground locations such as the Ruby Hills Mine, if using a weapon such as the hunting shotgun or cowboy rifle that load an internal magazine one shell at a time, Cass will suddenly display a graphical glitch that looks like a pair of enormous fleshy wings sprouting from her back or elbows. Telling her to switch weapons does not fix this glitch, but reverting to a previous save or exiting the cavern will.
