Hi, I thought I knew why this was happening, but no!
One of my students was using the Ruler tool to straighten an image. Her image kept flipping way off the canvas to one side, even though we checked to make sure her refernence point for rotation was in the middle of the image (it was).
I can't duplicate the mistake or find any other complaints about/reference to it -- can anyone help explain why this happens?
Are you talking about using the [Straighten] button up in the options area?
I don't believe that function should ever throw the image off the display. Something's wrong with the system if it does.
Try disabling OpenGL Drawing in the Edit - Preferences - Performance dialog, quit and restart Photoshop, then test again. If this corrects the behavior, then it's possible the system needs a display driver update.
Don't forget to turn OpenGL Drawing back on.
Thanks, Noel -- I'm glad it's not something we did to anger Photoshop! Since I haven't been able to make it do that behavior again, I hope it was just a passing thing. And if there's an error later I will get in touch with the person who's in charge of these machines.