This problem started a few weeks ago. I'm getting three crop icons in a row, not well-defined, can't tell which one actually impacts the cropping. This is also happening with other tools, including the eyedropper, paint bucket, lasso ... and sometimes the tool is fine outside of the image but inside of the image it triples and goes fuzzy. Happens on both attached monitors.
Changing screen resolution does not help, nor does rebooting or walking away swearing. Please help!?
Change the OS cursor scaling back to 100% - it doesn't scale cursors correctly, resulting in the 3 copies you see.