After looking all over, I still have not come up with a solution.
I have a datasheet subform with a conditionally formatted field.
When I open the datasheet alone the conditional formatting works fine but.... when I open the main form with the datasheet as a subform, the formatting doesn't show up until there is a mouseover.
Has anyone else run across this, and possibly have a fix for it?
I have tried to repaint, refresh and requery, and none if it seems to make a difference.