Platform, device version and operating system:
Screenshot or image:
What you were expecting to happen, and what actually happened:
Neither of those backgrounds are correct for either Delve. I think that’s Whitehelm’s background, but I think I’ve saw Leonis Empire, on the first occasion.
How often does this happen? When did it begin happening?
I first noticed this yesterday. Seems to happen occasionally, possibly on first restarting the game after reset. Note that I’ve been playing daily delves for months, and this problem really did start this week (either that, or I just managed to avoid it in the past).
Steps to make it happen again
You tell me.
You clearly have some sort of asset indexing and/or caching bug, as indicated by the incorrect labelling of game loading images, particularly just after an update. As mentioned elsewhere, it also affects the troops shown on battle loading screens.
I’ve now provided proof of all three variations. At the very least, I expect to see them all in the Known Bugs List.