I’ve noticed that when either a ZoomIn or ZoomOut is performed a one-time flash of the map appears.
For example, on a ZoomOut the existing imaged is reduced, the reduced image is cleared, and then the new rendering takes place. The fact that the reduced image is cleared is what causes the ‘flash’.
This ‘flash’ does not appear under V10.6. Under V10.6 the first thing that happens is the existing image is reduced and then the new rendering takes place.
It would be nice to see this behave in the same fashion as V10.6.