Are the miniaturisation specialities for laser and kinetic weapons supposed to be 10 times the research cost of the other specialities? They cost more than twice as much as massive scale construction tech.
Edit: Also I should point out there is all kinds os weirdness going on with AI in trade negotiations. I'll try list the things I've noticed...
If they offer you a trade that includes any kind of resource, you can't remove that resource from the counter offer, just reduce it to zero, which would be fine except the "0 Duranthium" one of you is offering to trade to the other actually has some level of trade weight. I've managed to buy things for nothing this way.
When a trade is close it's become second nature to me to click to add credits to the deal and it automatically approximates the amount of credits needed to even out the deal. Something is broken here though and I can think of 3 examples. The first is that the AI doesn't seem to be able to offer you their last credit which might be the cause of the second quirk.
If the AI has close to enough credit to even out the deal and you click to add those credits to the deal they'll add most but not all of their credits and think the trade is even. But it's not, it's in your favour. This is where it gets weird. I attempting to even out the trade manually by adding resources I discovered that in this scenario, the AI doesn't calculate the resources value into the trade. It still does some sort of checks, for example... They won't trade you more than a third of a given resource without the trade suddenly becoming absurdly unreasonable. If you don't have a resource or have very little of it they factor that in to. They will always give you 1, but outside that no more than half what you have already (I'm estimating these value a bit, the exact values seem to be a bit more complex than that but this is ballpark what you can expect). So if I have no harmony crystals, I can add one for free. If I have 7 helios ore, I can add 3 for free as long as they have at least 9. If we've both got a goodly stockpile of something I can demand a third of their stockpile. In a single trade I have got 1 of every rare resource I didn't have, something like 20 anti matter, 40 elerium, 15 duranthium, 230! promethium and 38 credits... What did I offer them in exchange? I offered them open borders. All that for open borders. But this isn't even the most broken quirk.
The third and most broken quirk is what happens when the AI is in debt. Click their debt to even out the exchange... They offer you their debts worth in credits. You accept you actually get the credits and their debt goes up to match (so it is doubled). 6 turns later you can trade with them again... See where I'm going with this? Plus you can do the resource exploit at the same time.
There's more. I've seen the AI make trade offers for stuff I don't have. You can accept these trades as long as you don't change anything on the table. The best is by far when I had a resource debt (it was like -2) and then AI sent me an offer to buy the debt off my for tens of thousands of credits. Substantially more money than they actually had! How could I say no?
I've never even attempted to trade for starbases and planets... I shudder to think how things can go wrong there...
Anyway on the topic of the trade window... It's not really a bug. But can I super strongly suggest a black line between the two colours in the bar that represents the trade balance? If you get a civ with a similar colour to you it becomes impossible to tell how they trade is being measured.
Edit 2: I'm also having issues with the ship editor. I have some bug where by when I'm in a game and enter it via a shipyard and click create new... There are no hulls available. Not even core hulls. Have to edit copies of existing ships to make new designs.
Also I have mentioned the various building you can research not becoming available to build when you complete said research in this thread yet? The research co-ordination building being missing are bothering me the most in the current playthrough.