I have a bug where forcelimits often pop up changing for a second as I pause the game, usually happens when I build something. Think I\ve only had it concerning naval forcelimit.



Another really annoying bug is "Scientific heritage" stacking! It generally gives 10% off on Technology cost, but I've had it stack up to around 8 times, this just happens for a sec or two, and if I then tech it when its cheap, I lose the stack-buff for the other techs for a while before randomly coming back (maybe saying this will help you figure out why its bugged). I'm not using any mods, this is with a custom nation and Scientific Heritage is my -10% tech cost idea.