LaunchPad and buildings are missing

[Xavier513]

Environment: RSS, RO

Sometimes after loading a saved game, I found the rocket standing alone on the ground, without launch pad and any other buildings around.

Here's how to reproduce:

1, Enter VAB, launch a vessel.

2, After the vessel is loaded, save current name to save "A".

3, Press ESC, and enter Tracking Station, then change launch site to another location, then click "Exit" on the top right corner.

4, Press ESC, load saved game "A".

5, When the vessel is loaded, the launch pad is missing!

Is this a bug of KSP or any mod? Is there any way I can fix it by myself?

I'm working on a plugin. I'm using "GamePersistence.LoadGame()" to load saves, is there any C# API can fix this?

Thanks very much!

Edited November 7, 2022 by Xavier513