hello ,
yesterday i was mining my way between two parts of a cave by placing mining supports at the edge of each other. that was wrong to do i know but just two tiles before the edge of the last mine support a cave in occured. The mine support was whole, it didnt suffer any damage or destruction.Also the center of the tile i was mining ,was inside the mine support's radius.
https://ringofbrodgar.com/wiki/Mine_Support this is the relevant wiki page.
to be more precice:
https://imgur.com/a/ACWm8JI
and here are some screenshots from the incident:
https://imgur.com/a/JT0ZyYv
https://imgur.com/a/cdu8ubK
if i did something wrong please let me know. but i think it is a bug.