Amethyst geodes don't generate properly when intersecting a mineshaft

I managed to catch this while going around underground in spectator mode.

A geode spawning in the same place as a mineshaft causes the blocks next to the mineshaft to be replaced with air. This was right underneath a taiga, hence the ferns growing on top of the dirt.

Seed is 9163275066495055902, the coordinates are 1511, 42, 22

At least the bats seem to be enjoying it.