In the quest Dragon Rising, you kill your first dragon. After the kill you are instructed to investigate the dragon. You can loot dragon normally, however the patch does not allow you to absorb dragon soul after kill. therefore the quest is stuck. You do not receive a dragonsoul, and you do not start the next stage of quest allowing you to use first shout in front of gaurds. I had to disable the USP mod, reloaded at save before dragon kill, than continued normally and the game worked properly.
I am not sure if this occurs after every dragon kill, or just the first kill.