I've seen a post about this, but I couldn't find it this morning, and I wanted to add new data, so here goes:
The Bug:
After leaving the sewers underneath Mournhold in the quest to discover the mystery behind the Daedric scrying wards, I appeared back in the world briefly, and then the loading screen suddenly came up again for some reason, followed by a rapidly changing series of tips/flavour-text at the bottom of the screen. This weirdness seems to go on forever, and requires a force quit of the game. Also, it persists even when I shut down the client, start it again, and log back into my character.
The Workaround:
Since the bug seemed to either kill me or leave me defenseless while some creature killed me, I tried reviving at the nearest wayshrine after one of my relog attempts. This did not immediately fix the issue. However, when I next logged on, the issue was gone and I was alive at the wayshrine.
Some Details:
1. The issue was preceded by a blinking cursor and reduced framerate. (After that, the screen turns into a sort of loading screen, but with rapidly changing tip text at the bottom.) This reminds me of the bug where your framerate slows down and the world/terrain/buildings/etc. disappear leaving only the skybox, and your character can be heard repeatedly screaming as if falling.
2. Once when relogging, I noticed that I was dead. (For a brief moment I could see the "Revive" options at the bottom of the screen, just before the load screen came up with the changing text at the bottom.) I'm not sure if I was dead the instant the bug occurred or not.
3. On one of my relog attempts, I tried reviving with a soul gem. It did not fix the issue. Also, I seemed to be dead again the next time I relogged.