The following bug occured no in two game to me..
I offered one tech for singularity driver I
and the ai would not trade it...than I added singularity driver II for the trading and suddenly I would get both techs from the ai.
An other annyoing bug If noticed often now is that the Ai calculates the value of stacked techs when trading for money not correct
For example I'll get for 3 techs 30o when trading stacked
and when trading them one by one the first will give 140, the second 130, and the third 100...
And last small issue is that Ai still holds to one weapon especially when you as player trades this technology between different ais, and than ai don't even research simple defense techs for the other weapon tech.
I had one game where beside all other only used MasS Drivers and had no Missile defense...this made it for me quiet easy
to just build ships with missiles and a lot of mass driver defense...
Otherwise I think the last 1.1 beta has really great potential and seems again to work a lot better than previous betas