lol, sorry mate I wrote this last night after a "few" bourbon (Wild Turkey!) and cokes!
Ok, I may end looking like the biggest goose here, if so, leave the post up, so as to forever help me remember my stupidity! haha
For the last couple of weeks, when ever I open MD2, and it only seems to be on MD2, this "small white hand" icon and a + in a magnifying glass appear at the bottom right corner of the screen, you can actually see it in the screen shots of the TB3 layout I done.
It lets you zoom in and out on the screen.
Now, after seeing your reply of puzzlement, I'm pretty sure this has nothing to do with MD2, and may actually be a "feature" of iOS running on the Pro...so, if this is the case, Im just gonna sink deep into my chair in embarrassment and pretend I'm not here ok? lol
Cheers