This isn't the same issue as the one you're describing. The issue I had was that tools were acting as fully charged every time without a cooldown. Please make a new bug page
My bad, somehow I couldn't find any issues relating to this, but right after submitting of course I find hundreds of them. Sorry to waste your time with another duplicate.
I had the same problem in this world: https://www.dropbox.com/s/rasq2xy77qyqnvd/New%20villages%21.zip?dl=0
When you load the world and move forward a little, it generates something which crashes my game. If you move back, however, nothing happens. It's generating something in the direction of a dark oak forest, so I don't know if it has to do with villages. Maybe there's another plains biome behind it, though. Anyways, maybe Mojang can use this world download to find out what the problem is.
Are you guys working on it?
Here you go.
Crash report incoming.
Are you sure you haven't loaded up your world in 20w06a or 20w07a once? in those snapshots, there was a bug which caused villagers to disappear. The 20w08a snapshots fixes that, but it of course wont revert the lost villagers if you have loaded your world in the other snapshots before.