The wall below the bathroom showing the vertical pex runs for the shower and the main bath vanity, along with assorted fished electrical.
After laying the last of the ceramic tile, I had enough mortar to bed the Shluter Kerdi shower base into the show stall. The full 32 x 60 was used, it just had to be sanded about 1/32 inch from each side to lay in properly.
Yay more issues. It appears whoever painted the first coat over the old paint (not us) on the trim inside the old closet door either didn't prep properly, or used unsuitable primer over the old oil based paint. With little effort, the overlying layers peeled off with ease.