Doesn’t merge rests in one when the measure has 3 voices.
v3.5 new feature: merge matching rests
(right-click the measure -> Staff/Part Properties… -> Merge matching rests)
It doesn’t merge rests in one when the measure has 3 voices.
And when it has 4 voices, rests are divided in 2.
Not sure if if it’s by design, but I expected this feature always make rests in one.