I read a couple of others who had their keys rendered invalid. The list of problems is endless. Bunny hopping, dolphin diving - both ridiculous and basic implementations if DICE/EA wanted a combat simulator instead of an arcade game. The red teammate bug is still there. The promotion thing happened to me. I got promoted on three different servers before it finally updated.
I agree, I can't believe they didn't add sabot rounds. When an M1A2 is on relatively even footing with an APC, something is wrong.
All they have to do to fix the bunny hopping stuff is to force a delay between moves. wouldn't take much... a second or two would do it. a run jump and dive should be allowed, but jumping from prone is assenine.