I had rock solid stability. Adopted France and started spamming Exhibition halls. I watched stability go down some, but I watched it every turn to make sure nothing went badly. Had a random event pop up took the +20 Stability as a precaution then I started seeing my stability start dropping. First turn 10% down, then 7% next thing I knew I was down to just below 70%. Switched up build to Commons Quarters. Killed a couple farms to put up +30% stability commons quarters (+60% stability in 2 turns), but my stability kept plummeting. I must have added about 400 stability over the next 20 turns and then bam I'm in a revolution. Huge continent map and had not even met another player. I only had 2 cities total with a ton of outposts. There is not a good reason gameplaywise for this to happen. Is there a bug or did the designers decide to get cute give France a chance for a revolution regardless of game play?