Riding my powered rail I expected to not just all of a sudden stop while the sound of the powered mine cart kept going

I hit an area with zero fps and sheep were in the hundreds with a square hole going as far down into the ground as possible. Like there was no programmed data for it. And now the whole world is kind of buggy and doesn't load as normal, even on initial startup. The whole world is just not working most of the time.

Steps to Reproduce:
1. Just going into the area is all it takes. One of the swamp/plains regions.
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