click on corner tile and easy see when alliance in your map!!
the issue should already be fixed. We also cannot reproduce it anymore. From when is this screenshot?
I have no clue why he show that. If you look and take time to notice the background was the desert. If I remember desert background was around the 3rd Conquest. So at the moment of the bugs when player have show this. This screenshot is irrelevant now. The bug is fixed long time ago