Columns or pillars sometimes block the passages of caves

When you are inside caves, especially spaghetti caves, sometimes you hit a column or pillar blocking the passage and making it narrow.
Sometimes you find it inside an open cave of a small size, which is random and overlapping, which makes the cave narrow and semi-closed
It is better not to generate in spaghetti caves, and to improve them so that they are not overlapping or adjacent, in order not to fill the cave and make it narrow and semi-closed

Steps to Reproduce:

1. New world seed: 1454093237
2. /tp -290 -13 17

Observed Results:
A pillar was generated which nearly closed the passage

Expected Results:
The shaft must not be generated in order for the passage to remain open