Anyone else noticed that? I think its a bug happening when the planet is closer to sun than the transfer orbit that orbital units use for interplanetary transfer.
It's known problem since interplanetary become available. I probably should stick all related issues on tracker into one of them.
No it's totally fine. It's better if issue reported 10 times than not than not reported it at all. I just guess this one kind of ongoing issue, so it's will be fixed once orbital once orbital mechanics will be updated.
This gets brought up quite frequently. There's a bug tracker for it somewhere... Too tired/lazy to search for it. In the meantime, just make sure there's a healthy distance between the sun and your planets.
FS#2827 - Asteaeus Not Working Thats one where it is reported but dont know if that is the original or a double.