Description: When you upgrade your system development/modernization using Lost Cities (N-P Artifacts), you get a wild boost to your approval in some systems.

Steps to Reproduce: Use Lost Cities (N-P Artifacts) as recipe in any system development upgrade, build it on any system with two or more colonized planets.

Version: 1.5.57 S5 GOLD-Public (prepatch beta), possibly also on latest offical release.

Reproducibility: 5/5

Insight to the problem: The approval bonus from the recipe is calculated at a system level, but applied later into each planet, so if you have 20 population and 4 planets, the 40 approval (20x2 per pop) is later applied to each planet, giving you 160 approval.

Possible solution: in "Public\SimulationDescriptors[ColonizedStarSystem].xml" I corrected the modifier to target the system and not the planets, also appears correctly on the happiness tooltip: 

<Modifier TargetProperty="Happiness" Operation="Addition" Value="$(RecipeIngredientEffectTier2Luxury14)" Path="ClassColonizedStarSystem/ClassColonizedPlanet"/>