Greetings!
The Revive a Thrall action must be one of my favorite ever! I get really attached to Thralls.
After I used the “Revive and Follow Me” action for the first time ever, my character froze, I couldn’t move nor perform any command.
What worked for me was to go to Inventory screen and back, then it all worked just dandy.
You can see it at 13:18 here:
Good hunting!