Solved [BUG] Cannot proceed in mine, because of ladder/staircase

[illegal_useraccount]

As I had this issue several times in a row(!), I thought I make a thread about this. Rather annoying, because you are stuck there and can do nothing.
I left the mine, returned and it happened again. Not funny.

 

[Ereo]

That happens quite often. I just take the stairs to the next level.

 

[Drullo321]

That is not really a bug. Just game mechanics doesn't exclude this case. Happens frequently, no issue here.