and another one with 1.09e. when you research an adventure tech, be it one that spawns quest huts or resources, those points of interest only show up the next turn. ofcourse this could be a design choice, were it not that if you save just after researching and then reload that save the point of intrest do pop up. better yet, if you don't save/reload but move a unit nearby (within the line of sight radius) where the point of interest is about to pop, it will also get revealed.

this goes for adventure tech you research but also for the ai's research. it's fun though when you resume your game and noticing you suddenly have 2 additional gold mines out of nowhere because the ai just researched them.