P: Please implement Photoshop's Canvas Size

Try to crop a 6003 x 4002 image to 6000 x 4000 in one go.

You click and drag, then release your LMB. Now your image is 5999 x 3998.

You zoom in your image to get better precision and try again, and this time you get 6001 x 3999.

....

Please implement Photoshop's Canvas Size (⌥⌘C) feature into ACR.