Comment 2 for bug 95619

I confirm I've had the same problem, except that for point 2), the dialog initially proposed to resize the partition to some non zero value. Note that I simply set that size to the actual size of the existing partition and then everything went Ok (though I would of course not do this on a production machine).

For me this needs to be corrected before I can do any installation on a production machine, I would classify it as highly critical.