[BUG] Nebulas have no effect

Yep, and ships map their routes right through them like they don't exist.

I couldn't put a starbase in one, though-- that still works.

Some race abilities negate the effects of nebula... could that be the issue?

I don't know about that, I'm playing the new campaign. Do Terrans have that? It is not in their description.

The Terrans I think might have that... part of whatever ability gives them Hyperion improvements I think.

Also campaigns are there own environment... so its entirely possible the campaign suffers that bug and nothing else does.

Thanks for the report.  We have a fix internally. I don't have an ETA on when it will go live.