I though that 1.07 did something to nerf the Muslim invasions, so Muslim players would not be far more powerful than their Christian counterparts. But if anything they seem to be even stronger now, massively reducing decadence?
It was Jihads. They can no longer be called before 1187.
The 1187 limiter was with 1.07b , not 1.07Hmm. I started a game as the Emir of Alexandria the other day and within at most 10 years my liege, the Caliph of Shia called a Jihad on Sicily. Maybe I was bugged out.