When I am exporting an image using the Export As dialog, and I enter 200px for the width, it will sometimes automatically change to something else when I tab out (e.g. 196 or 197). My guess is that this has something to do with Photoshop translating my pixel input into a percentage with a limited number of decimal positions, but this is ridiculous. I need to be able to export my image to exact pixel dimensions and Photoshop should be able to do that.