It looks like it is only at 50% or so.

I just tried it with a basic factory on my home world with a Precursor Mine.
I set Spending to 100%, Social to 100%, then bought the factory.
It came to 72, which is the correct amount.

So, I am not sure if it is the type of factory that might be causing your problem or some other factor. But mine worked correctly, so it is not repeatable in every case. I'll be watching how it works on other planets and with other types of factories, though.

Try demoloshing the bonus food tile building and see what happens.

I have found 3 bugs.

All 3 old I think.

Neutral Civs still do not correctly display the # of tiles vs. planet quality.
On re-boot, some tiles shift and appear over unlikey surfaces.
Mutiple minors share a raceicon.

So far, it isn't. I am playing Neutral, and most of the planets are correct, but not all, but so far they are only off by 1 that I noticed on my planets.

Are they ever going to get this stuff right? I mean cmon people, updates that promise and don't deliver are getting kinda lame don't you think? Having same issues over here guys, but then what do I know?!

Oh i have also added the save game that has that world for anyone that wants to look at it... do i have to include the ships i use or anything else?

Click Here

Ok just figured it out.
I have been able to repreduce this event in many games and with a 100% success rate.

They bug happens when you upgrade a farm on a 100% farm bonus (i havent tried the 300%s because well i dont use them ). For some reason the 100% stacks from the previos building. What i mean is if i upgrade a farm twice on a 100% bonus then it acts like a 300% bonus of the final type. And the worst part is that if you destroy the building well you still have the 300% food bonus but no farm.
A save then load fixes this though. But i dont like having to save the game just ot load it up because i upgrade my farms

I just hope this gets read.