Maximize Work Area (shortcut Backspace) is broken and does nothing in PP X7.
Also Hide Windows (shortcut Ctrl+Shift+F4) doesn't hide the lower set of Dockers if you have two sets of Dockers stacked vertically one above the other.
Win7 64bit - PP X7
Thanks for bringing these issues up.
'Maximize Work Area' has been fixed and will be available in the next update.
I'll make sure the "Hide Windows with multiple rows of dockers" issue is logged.
Thanks Andrew.