Affects Version/s: Minecraft 1.8-pre1, Minecraft 1.8-pre2, Minecraft 1.8-pre3, Minecraft 1.8
Fix Version/s: None
Wither Skeletons don't attempt to hide from sunlight, but once they get under an overhang, they don't move out from under it, not even to attack a player.
Noticed in this video (at about 29 minutes in): https://www.youtube.com/watch?v=HMs0eIayCKE
It was recorded in 1.8-pre1.
Tested further by myself in 1.8-pre2. They came out from under the overhang a few times, but most of the time they didn't. They came out about 18% of the time (7 times out of 40 tries).
I will upload a screenshot of my testing apparatus if requested.
MC-8671, which is fixed.