I have experienced the bug MC-131071 which was classified as fixed. I can reproduce it every single time by going to an End City which is located at 300, 1300 aproximately. Each time I get the same crash
MC-153945
New Chunk generation Exception: Asking a region for a chunk out of bound | X X
Resolved
Duplicate
0
Pablo Juanals Bermejo
(Unassigned)
Unconfirmed
(Unassigned)
Minecraft 1.14.2, Minecraft 1.14.3 Pre-Release 1
Retrieved
The first crash report is invalid because it comes from a modified client. The second crash is MC-150694.