multiple drop shadow
Applying multiple drop shadow effects make them being displayed inconsistently.
Shadows in Ai work differently from Ps.
Each shadow in Ai applies to the stack above it. It means that you first shadow will cast second shadow.
This is 'as intended', and at least allows to trick Ai into making soft shadow, layering them.
But this should be optionable, I agree.
I'll make it into the feature request (which means it won't be picked up in the next 5 years).