Intuos Mouse (moving around on the Intuos Tablet)
does work for drawing and marking with the left button on the drawing area
does work for zooming in and out with the middle-button wheel
does work for calling up context menus with the right button on the menu bar and the layer list window
does not work with the left button for actually clicking any menu item (Edit, View, ..) nor action icon on the top nor the left (e.g., draw lines, measure, zoom, undo, save, ..) nor the layer window (e.g., toggle visible, lock layer) nor the property editor.
Wacom mouse model: ZC-100-01