I dont know where else to post this, so posted here.
I have encountered this issue a while ago, so asked other PCC members (JakP to be exact) about this. He encountered the same thing with other players missions too.
I made two missions (2811 and 2812), where I specified where the mission should plot a course, and an objective to dock with that station. This is where the weirdness happens.
When I reach the stage where the mission would plot a course to an another system with a station sector, instead of plotting where needed, it plots to Sol II E-4 I think, where is no station, but the missions take place in greyspace (like 2811 at its end should plot a course to Sedina L-2, but instead plots it to Sol II). I looked at the mission several times if I made something wrong, but no. Everything was alright.
So I think its a mission editor related bug or something, because not just plots the course to the wrong place, but the objective what requires to dock shows the wrong thing too.
This is annoying, because none of my missions work correctly, so I cannot finish them completely.

Thanks for the report. It should be fixed now.