Frequently the grenade launcher will bug out; when I pull out the grenade launcher it has a tendency where its animation will break and neither the ads nor movement animations will play. Furthermore, while I can launch a grenade I cannot reload the Launcher, I have not found a workaround or cause.
Grenade Launcher bugs out
Second this. The GL on AK platforms have no animation whatsoever. On M16/M4 it'll work occasionally.
@best_pseudonym Had something like this earlier where the whole thing bugged out and I couldn't aim it at all, really.