Three bugs/flaws
1) More flaw than bug. There is no hourglass icon when opposing sides are moving, giving the impression of frequent freezing and stuttering. One should be added.
2) Clicking on level-up notification icons (right side of screen) causes the unit to be highlighted as well. If in an army, it is easy to unintentionally move the unit without the army. This behavior should be changed.
3) My opponent (Ulrim or whoever the yellow dwarf-like faction is) somehow gained a stratospherically high power rating, well outside the competitive range of any other faction. His gildar count was in the high negative numbers. On a whim I selected the "sum" in negotiation and was able to strip the opponent of almost anything valuable. When selecting the negative sum using almost any adjustment button (+-1, +-10, +-50), the sum would become an absurdly high negative number. This reminds me of some odd behavior when working with double floating point variables.
I uninstalled the game after that. I was enjoying myself, but with errors like that I can't trust the AI or game mechanics. There's effectively no game to play if it breaks randomly. I'm sure I'll come back to it once you Stardock guys get things cleaned up.