How can I get "grave" full screen toggle button to work in Premiere Pro CC?

I don't really see why this is different since the grave key "`" is in the same position on both UK and USA keyboards.  Also the "Premiere Pro" keyboard I bought specifically for UK Premiere Pro users clearly shows that same top left key "`" as "Toggle full screen".  I appreciate that some other special character keys are in different places (the "@" key placement is always an annoyance) but the grave key is not one of them and to be honest if this were the issue I would have expected a Google search to have turned up more results. As it is I think the CC editiion is so new that most are using earlier versions.

I didn't change them. When I go into Edit them they're set to "Adobe Premiere Pro Default".  I did (just) try changing them to "Adobe Premiere Pro CS6" to see if that would change things, but alas it didnt.

OK. Think I've got it now thanks to looking at the short keys and searching for "Full Screen".  The upper left key is "`" which looks like a grave - a slightly angled single quote. But when I look at the "Application" setting for Toggle full screen it is set to "'" - a "normal" single quote.  Sure enough, if I hit the normal single quote key the toggle works.

I have not been anywhere near the hotkeys and can't imagine why anything would change it from a grave key to a single quote - especially as they look almost identical on the screen.  I'm guessing that Adobe changed this (maybe only for international users?)

Anyway I now know how to toggle full screen, although it makes the "Premiere" keyboard with its big purple key for "Toggle full screen" redundant.  Does make me wonder what the shortcut key of "'" or CTRL + "'" gives that I'm presumably missing since it appears to have been remapped.