Notice the angle cuts, the top one is the wrong angle and the one below it although better is not the correct angle either.
Notice the tiny piece of tile that they used to fill in a space that should have had a full size tile strip.
This is poor layout planning and terrible craftsmanship.
Notice there is no space between the top of the window frame and the small strips of tile, which means there will be no groat in there thus making it more vulnerable to moisture.