Lack of options in diplomatic offers

[Gorofin]

Sometimes you get diplomatic offers like this one:
Trade your mining station in system A against our mining station in System B.
The options are Yes or No.

I cant leave the dialog without choosing one of this selection, I can delay it to get data for the decision.
I like a normal close button there, without deleting the proposal.

[Dracus]

agreed, that kind of caused me a few issues before.

[Tkins]

I like this. It's hard to find out where the two items are. I don't have the brain capacity to remember every system and base in my empire, so trades like this I never really know if it's a good idea or not.