[Captain Kwok]

I identified the problem. The AI has a desired research to intel ratio (typically 4:1 research to intel) that it would like to maintain. Sometimes to keep them in balance, it will add an intel facility on a research planet. This mostly exists for smaller empires that don't have a lot of colonies and may not have declared a planet specifically for intel purposes. What is happening here with research compounds is that the AI is wanted to add an Intelligence Center but hasn't yet researched intelligence services, so the planet gets stuck not building anything until Intelligence Centers become available.

I'll have to put a fix for this.