Do the Religious Shrines work?

[Mark Walton]

Did a small test on fate shrines.
I created a shrine with a +10000 chance, then ran 300 turns on 3 systems (one with shrine, two without) with high events.

Result:
System with "curse" shrine : 5 events occoured.
Other 2 systems : 3 and 2 respectively.

I need to do a better test, but the ability seemed to work - a bit - but only with huge scale numbers.

Is there any confirmation that the ability is just plain, un-abled, or does it only appear to not work?