I might have suggested to build the crown out the thickness of the tile and continue the crown around the shower over the tile so you would not get the finish you have.
Crown molding tile transition.
Thinking to myself in 2010 how does a person paint stair.
Oct 20 2017 taking tile all the way up to the ceiling in the master bathroom had an unanticipated puzzle.
The answer was simple but i ll admit i had to think on it.
If you need a drawing for clarity let me know.
The crown transition can be easily handled by padding out the wall with a filler strip of wood behind the crown.
Make a template by aligning a small piece of crown molding with the edges of a sheet of paper.
I d keep the bottom of the filler strip even with the bottom edge of the crown.
Using a piece of crown molding as a reference nail the board to the wall slightly above the bottom edge of the crown.
Trace along the back of the molding to make a pattern.
Cut a strip of wood thinner than your crown moulding and the same width as your sheets of tile.
The answer was simple but i ll admit i had to think on it.
Let one edge of the paper represent the wall and one edge the ceiling.
Comments 1 from the pic it appears to be installed correctly.
What on earth do i do with the crown molding as it transitions from the tiled shower to the wall.
It ll simply look like the crown is thicker where it s padded out.
Provided they have coped the crown this would be a easy process.
Crown molding transitions against tile shower.