The old system of revolt risk, with a chance of rebels spawning in a province by random chance every month has gone the way of the dodo. It was a system that has served us well through many versions of Europa Universalis, but we think we have something better.
The new concept reflecting unhappy subjects is called unrest. Unrest in a province will affect how quickly regiments and ships can be recruited there, but it has no direct impact on your economy, since we've introduced Local Autonomy to cover that side of the ledger.
Every province is aligned with one possible rebel faction. Each month, every province has a chance (depending on its unrest level) to see an increase in the progress of an uprising from the local rebels. When the progress reaches 100%, the faction rises up in revolt with as many stacks it has support for, and the unrest is reduced in those provinces - they have expressed their anger through arms and it's up to you to put them down.
Above is what the DD says, meaning there will NOT be any random chance of rebels spawning in provinces.
However, my game as Great Britain saw many random events which spawn rebels everywhere in my empire, from Ireland to India!!!
And the fact is that the unrest in these provinces is 0%. I do not see why rebels still can spawn?
Can someone enlightened me?
Is this a bug that Paradox is looking into it?