The Bug:

Strongholds and mineshafts can intersect one another.

Here is an example:

Seed: 7555437788059119351
Coordinates: /execute in minecraft:overworld run tp @s 1510.83 7.00 826.63 -427.14 -4.52

Steps to Reproduce:

1. Generate a world with the seed provided above and teleport to the given coordinates.
2. Look closely at the generation of the stronghold and mineshaft.

Observed Behavior:

Strongholds and mineshafts can intersect one another.

Expected Behavior:

Strongholds and mineshafts would not be able to intersect one another.