When using the colony management screen (from "govern" --> "colonies") if you sort the list by one of the variables (ie rank by production, approval, population, etc) then click through to one of the colonies then close the colony to return to the colony management screen, the list no longer lists the colonies in the order you had just ranked them by. This is really annoying if you're trying to, for example, list all of your colonies by approval, go through the list of low approval colonies and jump into each one to build an approval increasing building or the like. Not game breaking by any means, but is a legit quality of life issue..
cheers