FWIW that F11 transition works the same for me on KDE (4.12.3) on Kubuntu 13.10 - it's been there for quite a time.
I'm using Firefox with the borders set off right now. This gives me a window with no external chrome (no border, no titlebar, no buttons, no scroll area) but set with the standard KDE application bar (which I keep at the bottom a la Win95).
Indeed before Firefox ditched the menubar I used an app to get the same effect pinching a lot of real-estate back (titlebar, menubar, buttonbar). It's interesting that things have moved this way, though not surprising.
I'm using Firefox with the borders set off right now. This gives me a window with no external chrome (no border, no titlebar, no buttons, no scroll area) but set with the standard KDE application bar (which I keep at the bottom a la Win95).
Indeed before Firefox ditched the menubar I used an app to get the same effect pinching a lot of real-estate back (titlebar, menubar, buttonbar). It's interesting that things have moved this way, though not surprising.