Rev 3470:
My game went from having 0% inflation before update to having 79% inflation and worsening after update. My game is in Ancient Era and I switched to my first inflationary civic (15%) not too many turns ago. Went from having ~+125 gold per turn at 100% research to ~-375. Research dropped to 0% and it's still at ~-175 gold per turn.
That is intended, there was a major bug with the new inflation that caused overall expenses to be almost 0. Now it is working as intended AFAIK.