System Facilities - bugged?

[Pax Humanis]

I'm referring specifically to the system-wide facilities that provide resources to the empire (System Robotoid Facility for example).

I am experiencing what appears to be a nasty bug in that these NEVER provide any resources at all. In fact, building one seems to LOWER my resources (on all planets in the system) by 2k a year.

As a test, I created a new game with max tech and used a stock AI as my race. One system had 3 planets in it to play with. So, I did the following:

Starting mineral production: 30k / 29k / 29k
Scrapped a facility on each one then generated a turn: no change to minerals (of course)
Built a Mineral Scanner 3 on one planet: resources went DOWN to 28k / 27k / 27k!!
Scrapped Mineral Scanner 3 and generated a turn: NO CHANGE

I am running SE4 Gold v1.84, no mods.

Anyone else seeing this problem?

And as a side question, while Mineral Scanner 3 is cheaper to build than a Robotoid Factory 3, why would anyone EVER spend that much research for a trivial reduction in a one-time resource expense?