I was playing Lumeris, and noticed that building the Endless Research Park and EndlessWorld did not grant the dust and science bonuses on my ecstatic population. I foolishly built the building on a planet that is harvesting transvine, so it was almost impossible to reduce their happiness below ecstatic. I suppose it's not a bug since the building description does clearly state that you gain 15% dust on happy, 15% science on happy, but it seems very strange to me to punish the player for his citizens being ecstatic (even if in a somewhat minor way)!

I can confirm that optics lab does provide the bonus to both happy and ecstatic even though the tooltip reads +25 on happy. One of these behaviors is inconsistent!