OK I've seen this posted before but have not heard if its been fixed.
I'm near the end of the game and want to get the black hole eruptor before its over so I shut down military and social and go 100% research.
Soon as I do this I end up -2147744739... even though I still have have an income of 1500 BC a turn.
I believe this actually had a negative effect on my overall score when I submitted it for the metaverse