Ok, fixed this by Installing kstars-bleeding.
First I have to say what an amazing labour of love. I am over-whelmed by the scope of this project.
I am a Kubuntu 18.04 user and I have the same problem as described here for windows:
As it was registered in May 2018, the month after my 18.04, can I assume it will be fixed in Kubutu 29.04, later this month? I'm planning to upgrade when it comes out. Alternatively, I suppose I could download and compile the source.
What do you think?
Same problem for Orion SSAG.