Different game, different developer, same glitch. It just wouldn't be a Battlefield game without stretchy neck man.
If you aren't familiar, the bug was originally seen in Battlefield 3, where sometimes the player's neck would stretch while prone:
There was a similar bug in Battlefield 4, and now that Battlefield Hardline has been in beta for barely two days, it's already shown up again:
Thanks, Stun_Gravy, for always being on the most important new battlefield developments.
Return Of Neck-Man [Stun_Gravy]