Horizontal scale reduction when printing from InDesign w/Crops

Good Afternoon.

I am using the most recent indesign and running on MacOS High Sierra Ver 10.13.6 . When I have a 17" x 11" document and that I put crops on to print on a 18" x 12" sheet of paper it reduces my document size horizontally on the printed piece of paper. The printed piece with bleed should measure 17.25" x 11.25" but when I put the crops on it measures it measures 17.1875" x 11.25". If I print on 18" x 12" paper without crops but leave the bleed on to print it will print at the correct size of 17.25" x 11.25".  Please someone help with the horizontal scaling that is occurring.