Background: This behavior occurs because the Font Smoothing options in the System Preferences are set for the wrong type of monitor. To change monitor settings, follow the steps below.
- Go to Apple > System Preferences > Appearance > Font Smoothing and select Standard - best for CRT
- Quit and re-launch QuarkXPress
For 10.7.x , 10.8.x , 10.9.x :
- Go to Apple > System Preferences > General> Use Font Smoothing when available
- Quit and re-launch QuarkXPress