v1.1.1 build 10356.1702521
I've had this happen to me in multiple campaigns, but when I click to check an enemy army's composition and then click my own army to move it sometimes a blue cross will appear on the map. I've had this happen since release and in every beta build.
-Click the Gonsun Zan army
-Click the Liu Yu army
-Repeat until the blue cross shows up while the Gongsun Zan army is selected.
Details of any solutions that have already been attempted: None