I find that Photoshop, Acrobat, Bridge and Dreamweaver all follow Apple’s standard of double-clicking at the top of a window to make it expand to full screen or return to the previous size. InDesign (v.19.0.1) apparently does not (I use only these five Adobe Cloud apps). InDesign windows will double-click expand to full screen but won’t returning to their previous size. The alternative, dragging the right-hand edge, is very tedious.