I really love the gameplay for the most part, but there are a few major glitches I've noticed:
1) Major lag resulting in hit detection issues, some players skipping around and lagging out of games.
2) Unresponsive controls, where I try to run, reload or shoot and nothing will happen.
3) Sound cutting out for no apparent reason, eg not being able to hear bomb arm alarms.
4) Occasionally the reload animation will not kick in.
5) Falling through the map geometry is a ***** -_-
6) Problems with hit detection that may or may not be due to lag eg head shots not registering, knife kill animations delayed
7) Difficulty connecting to games - get a lot of "Cannot connect to EA servers"
8) The squad system is somewhat screwy, as it may split your squad into different teams to balance player numbers or force you to play with strangers.
And while this is not a glitch, I am just pointing out that prone and bushes are a fucking terrible comination. While I love prone for the sniping applications, far too many people will crawl through the bushes and SMG any poor bastard that walks past.
And in case this is somewhat relevant, I am playing on Xbox 360.