Ravagers without a target face north when you load your world, and do not change directions in a confined space

So, I don't think anyone else is crazy enough to capture a Ravager in survival, but I did! I noticed the next time I logged in that he was facing north and not turning, as if he lost his AI. My other convicts turn and occasionally move around in what little space they have, but the Ravager stays completely still, as if he had no soul inhabiting his body. Just staring off, into the distance.
Note: The left picture is before a relog, and the one on the right is after a relog.
Note: Sometimes, they don't face exactly north, and might face northeast or northwest. See the third picture for reference.

How to reproduce:
1. Build a 2x3x2 cage out of iron bars, with a roof made out of any solid block.
2. Spawn a ravager inside the cage.
3. Relog. Make sure you are on the outside of the cage.
4. Observe the ravager.