Hmm...

Every now and then (approximately less than 10% of maps) the player isn't placed on the map.
It's there, it's just not starting.. eg:

Or even stranger, with a placed player, the starting exploration is too small, like:


Something, somewhere needs to be fixed.

*edit
So somewhere, for whatever reason, the starting map display was going to Y,Y rather than X,Y.  which meant that when placing the player within the visible map area there was a chance it was going way off screen.  Hence picture 1 above.  This may also clear up the exploration error, but I've not checked that yet.