Always rotates from the center of the canvas? I zoomed in to an area to detail it, drew a line or two, went to rotate to another angle and ended up on the other side of the drawing... Wha? Not at all what I was expecting.
I had to zoom out, rotate just right, and then zoom back in. Ugh, why not rotate from the center of my viewing area since that's what I'm focused on anyway instead the whole canvas? Zoom becomes useless when zoomed in more than 200%... you just end up on the other side of the canvas nowhere near where you wanted to be.