Dragable Interface Options Menu

[Uggers]

Hey,

I'm having a bit of a headache trying to work out whats going on.
I used to be able to drag the interface option menu around and be able to still use the movement keys when it was opened up.

Now for some inexplicable reason, its not longer dragable, and no keys will work when its opened.
I've run it without any addons. Then tried again by temporarily removing the WTF folders for addons settings and the addons themselves but no such luck.

Its been such a long time since I've run without addons, I'm not actually sure if this was the default behaviour anymore :/