When you go into city details screen and hover over city defenders, there is no pop up showing you the defender stats. I know this used to work in the past so a bug was introduced in one of the later versions.
Oh and a couple of things:
1) Please add a "use no mana" autoplay button in the tactical battle screen. I want to hit autoplay for easy battles but when I press autoplay my sovereign immediately wastes mana by casting some unnecessary spell. This shouldn't be too hard to add.
2) When resource production is displayed if you produce 0.5 crystals for example, it shows 0. Fractions need to be added.