Docking mission doesn't trigger

The task in the mission where you have to dock to the satellite/station doesn't trigger. I have tried several different docking ports on the station, but probably not all of them. I also tried if there is a timer after which the task will trigger or maybe after burning the rest of my fuel, but nothing of that seems to trigger it.

I'm using the latest beta version 0.6.9, didn't test on the normal version.

Has anyone managed to complete the mission yet?