Hello, i occured strange bug with citadel system. I cannot restore destroyed plated in system or guard this system. 

I meet the bug only in system where i built the citadels myself. Captured systems with citadel work fine for me. He is screenshots and save.

Save file: 1.sav

Screenshot 1: bug with restoring planet in system with citadel.

Screenshot 2: bug with guarding the system with citadel.

Screenshot 3: everything works fine in captured system with citadel. Also i didnt have any troubles with restoring destroyed planets in captured systems with citadels.