Choosing that option showed an outcome popup window stating:
"Unrest increased by (inv) 10%", different from the decision text.
Looking at the unrest icon tooltip in the city:
1. Unrest rose by +18, which (assuming inv 20%) matches the decision original text, but not that of the outcome popup window
2. There is also a new variable mentioned, "workerunrest" which is not explained/mentioned anywhere I'm aware of

