I run OS X 10.4.9, powerbook g4. I bought pro 3 a few days ago and have used only grapher. Graphics card is ATI Mobility Radeon 9700.
I have used only the grapher module so far. I noticed that the module comes up with a blacken radio button for 3D, but the display is 2D. To make the display 3D I have to click on the 3D button.
Other buttons also require 2 clicks. To make the plot spin, I have to click the Constant radio button. A black spot appears in the button, but plot remains stationary. Next I click the same button again, and the plot begins. Similarly for the Inertia button. If I click it, it goes black. I grab the volume but it does not move. Click the blacken Inertia button again. Then I can rotate the volume. Similarly the slicer button needs two clicks.
I would say the buttons for the control panel are not programmed correctly. It is hardly intuitive that you should click a radio button that indicates that it is active a second time to really activate it.