When the artboards are rotated, when I use alt+scroll to zoom to a certain spot, it zooms somewhere else instead. What's happening is that it's zooming to the spot that the cursor would be over if the artboards weren't rotated.
For example, my artboard is rotated 90 degrees, so the bottom right of my artboard is on the top right of my screen (top right of artboard is on top left, etc.). When I use the zoom tool, clicking on the top right of the screen zooms into the spot under the cursor (the top right of the screen, bottom right of the artboard). When I alt+scroll on the top right of the screen (trying to zoom into the bottom right of the artboard), it zooms into the top left of the screen (the top right of the artboard, [where the cursor would have been, had the artboards not been rotated]).