Its happened to me twice now, caved in when breaking the initial cave wall. Not 2 tiles in, not 20 tiles in, just the initial cave wall. I thought there was supposed to be some kind of cave dusts minigame or some kind of warning?
I have 2 concussions and "something broken" and "unfaced" from getting caved in twice just doing some initial exploratory mining on cave walls just to see what's behind the wall. My friend says this isn't normal and that it never happens, but its happened to me twice. I'm inspecting (using ender client's inspector, not the in-game inspection) and see "cave wall" and I mine it, just that one square, and boom -- out cold.
Makes me scared to even try to mine anywhere. Seems like a pretty steep barrier to entry when I don't have any metal to make support beams? Like how am I supposed to do this safely?