Hi Steve,

This sounds like a display problem, possibly due to the user's display settings. You can use this article to check to see if the display settings are set to the default:

How to change dots-per-Inch (DPI) settings and screen resolution

Note that after changing the settings, a reboot is required even if you aren't prompted. Also, if the user is remote, the settings on both the remote and local machines may need to be changed.