In the latest Patch 3.1 the Kingdom’s icons missing on cards. This is a really improtant feature browsing in “Troops”, seeing the Kingdoms make it easier to create and find the missing card we want. As we can see, they are missing and I think its a bug.
Yes, it’s a bug. It should be in the OP of the Known Issues thread.
Edit: it isn’t in the OP, but it should be.