I've looked throughout all settings and menus and did not find such setting.
On one of the PCs at work one instance of Adobe Acrobat doesn't show any of the trim/art/bleed/crop boxes - it will show them in the small preview window of the crop tool, but not on the actual document. How do I enable them?
"Show All Boxes" setting in the crop tool only works for the preview window, not the document itself.