Two possible bugs.
I started with 3 Human races on Earth, me, the Western Alliance, a neutral UN and an NPR USSR. Standard start otherwise in terms of population, tech, etc.
In wanting to try out C# combat, I have run into two things I noticed.
1. I SM'ed 2 ELINT platforms orbiting Earth at the beginning. In the 8 years since start, the Intel window report 0 intel gathered.
2. I seem unable to be hostile with the Soviets. I do not see an option on the Intelligence and Foreign Relations window. Military cooperation is "unknown" even though communications are established. Diplomacy has stayed at 40 the entire game. In addition to this, in an effort to see if I could start hostilities, I attacked some ships in orbit. I was able to manually target them, and the Soviets certainly know about the war as in 5 seconds they began shooting back. However, my ships still saw them as neutral, did not use PD or otherwise recognize the other ships as targets even as diplomacy ratings went negative and my ships started to blow up.
It is entirely possible I am just missing things as new to C#, but otherwise the DB posted is before I started shooting.