Issue
The Cover Fills of some or all Elements are set to appear as a white surface. However, they are displayed in gray or shades of gray in the View Map/Project Map.
Solution
This is due to an On Screen Setting, designed to help distinguish elements in the Workspace displayed in the same Pen.
To deactivate it:
1: Go to Options > Work Environment > On Screen Options.
2: In the Dialogue, expand the section On-Screen Options.
3: Uncheck the setting Automatic Pen Color Visibility Adjustment for Model Views.
4: Click OK.