I don't know if it's a bug or it works as it was intended, but the spawn point of mining hole places character at the right side of the hole rather than at the rope ladder. Kind of annoying - run around every time
And here I should apologize for my spelling... But I won't! Deal with it
Another option is building a picket fence/palisade right around it, and putting 3 wide gates on each side. Doing so will cause you to be placed in the center of the minehole itself regardless of whether or not the gates are open. This lets you happily walk off to the side of your choosing.
"The psychological trials of dwellers in the last times will be equal to the physical trials of the martyrs. In order to face these trials we must be living in a different world."