If you can let us know if this fixes your issue. In all my years making games, this has been the weirdest and most frustrating bug I have seen! I would be much more comfortable if one of us could recreate it as it's not a problem with the game, more that it complains that the player is not logged into Steam, but does not show the player the Log in Window. (and this was something we didn't even work on recently!)
So we hope this hotfix does it, we are monitoring the situation and just want to thank you for your patience.
Bug fixes:
- Prevented a Steam API issue that could prevent progression past the main menu.
- Prevented flights from consolidating together while still under construction.
- Flights continue constructing after loading a save.
