Scroll document whilst Pop up window is visable (e.g Place)
When any pop up windows like Save/ Place/ Export is open it is useful to be able to scroll the document in background.
For example: In InDesign CS6 and you can scroll the document behind the Place pop-up window. In Adobe CC this function no longer works – which slows the design and layout process down.
This feature was especially useful when producing books with many images in.