I just got around to testing this out. And when I hit the Full-screen key. It's like a toggle. I'm not sure if it's related to the default toggle fullscreen behavior or not. But if it's toggled on, certain parts of the touchscreen don't work correctly and buttons are only highlighted not pressed. Which was weird at first, as afraid the touchscreen was dying. But then x11forwarded into my desktop and taps in gedit were right-clicks, it was then that I realized it might be toggled on. Pressed full-screen key. Left clicks work in OS2008 and elsewhere, w00t. Thanks a lot for this.