In the Empire Options, if you turn off "Display note when similar system-wide abilities exists", it doesn't really turn off. It still pops up with a warning message when you add a system-wide facility to the queue if you have one built already.
When using a robo miner (or one of the other two robo units) in a field or planet with a rating of 250% to 300% the field will drop to 249% on the next turn. It also appears you only receive resources as if it were 250% and no more.
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Those who can, do.
Those who can't, teach.
Those who can't teach, slag.
In simultaneous games, if you send the order scrap facility type, it don't work.
Not a bug but....
If a race surrender to you, don't exist an option to get all is planets / ships Minister controled, you have to find one by one and do it manual.... in big games is boring