10.4.0 prod and 10.4.1rc2.
When I measure distance on a map with the Atlas between points while I drag the + to the next point there is a flickering of a (apparently white) box in the area of the map where I'm measuring. And while dragging the current cumulative distance is not shown. On Mac there is no flickering and the distance updates smoothly as you move from point to point.
Edited by Daniel Semler, 27 March 2014 - 10:01 PM.