Thanks for the answer but, it’s not exactly what i was looking for.
I found out what is wrong. I’m using a Magic Mouse on a Mac and I was resting my fingers on the button area. (As I normally do on a button mouse) The mouse is detecting my fingers as an input on a trackpad. And unreal now recognises these inputs so I was “moving the camera” and unable to use any keyboard shortcuts.
If you lift your fingers off the mouse the WED shortcuts work as expected.
Dumb on my part, but it might be helpful to someone in the future.