Text blue highlights in Screen Mode "Normal" view
Using iMac 2013 with High Sierra 10.13.6
InDesign CS 2019 up-to-date 14.0.2
In View drop-down menu, Screen Mode "Normal" selection, blue boxes appear over some text and behind some text boxes. It is intermittent, no real common denominator. It disappears when Screen Mode "Preview" is selected.