I have the same issues sometimes with all three of them. Sometimes, when the fix does not seem to work, it helps to change to a different STAR and runway. Also it helps to first program the sid and departing runway, then the route, star name as last waypoint. Then go back to dep/arr section and type in proper runway from the given star in flightplan.

I use the freeware version of Routefinder.
Annoying bug, yes. But in the end I normally find a solution, one way or the other.

Br,
Anders