[Bug/UI Issue] Never allow the player to go multiple turns without a Research selected
Due to the really buggy event queue system (see: https://forums.elementalgame.com/415668), it's currently possible to have the research selection popup appear, then get overridden by a battle event.
If you forget to revisit the research screen, the game is happy to let you pass many turns without any research whatsoever occuring - this shouldn't be allowed.