[MC-216248] Rails in mineshafts are generating in mid air

The rails from mineshafts are sometimes generating in mid air. This looks very weird and definitely should not generate in that way.

I was using the single biome generator with the dripstone caves biome. But I have already seen this bug multiple times in non snapshot verions.

Seed: -4641933046031374894

Coordinates: -200 -3 -58

Linked issues

i found one that generated on top of a cobweb

[media]

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We're tracking this issue in MC-125343, so this ticket is being resolved and linked as a duplicate.

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