When fighting in the Imperial City, I encountered a very unusual and annoying bug, which meant that I could not fight with light attacks, use abilities, or weapon swap, etc. This was because I was in a state of CC permanency, so I had all the affects of CC on my character, but no matter what I did I would always be stuck in it. I would be stuck in it even after death, meaning I had to restart my client.
I have linked a video in this thread to show the issue in-game. As seen, I can CC break constantly, even without having a CC ability cast on me. The CC break doesn't even fix the apparent affect I have on my character. I also tried to dodge roll, but that didn't work, and my attempts can be seen where my character's feet does a quick shuffle; but not roll.
This bug is especially annoying, since I had to restart my client. But... This has only happened once to me, so I presume it is rare, but still frustrating nevertheless.
UESP Staffer & Wiki Editor