Structures are sometimes placed on player spawn

The bug

With some seed/world combinations, structures generate on top of the player spawn point, causing suffocation and death. After respawning, the player will be placed in a safe area.  If structures are turned off, no issue occurs. This may be Warm Ocean Buffet World specific as I seem to encounter it specifically with those world-types.

How to reproduce

The following seeds/world combinations generate this issue and I will update this bug as I discover more.

Notes

• Unfortunately, I did not catalog all of the other times this has happened, but in total it has probably happened 3-4 times since the buffet world option was introduced.
• This is related to MC-129912 in that the height of the world at spawn changes once structures have been placed.