I don't know that this is so much a "known issue" as it is a feature request, but since it ties heavily into this update, I'm including it here: on the PvP Defenders tab, can we get a tool tip/text box/something that explains how the priority sliders work?
Ever since this update went live, I've gone with a Goblin defense team. I tried doing a few test battles, tweaked the sliders a little, and was generally pretty happy with how my team did. Usually it had a win percentage in the 40-45% range. This week, it's been getting beat up on more than usual, so I decided to at last make an overhaul to the roster. When I did a few test battles with the new team, I was surprised at what colors my defense team was prioritizing. Maybe I'm the only one, but I guess I thought colors toward the left of the slider would be given higher priority (I could have sworn this was the case when I was doing testing with my Goblin team). With this new team, it is pretty much entirely ignoring colors I've set towards the left of the slider. I literally have no idea how my Goblin team won a fraction as much as it did, since I had green almost entirely to the left.
Anyway, it seems like an easy fix to add some sort of an indicator to the screen that briefly explains how the sliders work (even if it's something as simple as "Low Priority ---------------------------> High Priority"). To me, it's not intuitive at all the way it is currently set up. I do really like the feature. I just think it needs to be explained a little more to remove all the guesswork.