Two times today while descending the water mine, I came upon a floor that did not spawn a hole down to the next floor. I didn't make a note of which floor it was the first time, but the second time it was floor 31. The first time, there were at least 3 silver seams as well as silver nodes, which I recall noting at the time as being unusual. Exiting the game and reloading the save did resolve the situation both times. Steam PC, multiplayer save, only host playing.
#No hole to next floor spawn in water mine. Happened twice today.
vestal crown