Re: trade/gift bug???
 

No idea. I just know that very little is known about this bug except that saving might be involved and that doing diplomacy last usually avoids it.

Re: trade/gift bug???
 

I can almost assuredly say that I never saved when I found success at using diplo at the end.

Recommendation for a work-around? Do your turn. Save it (if you think that's necessary). Open it back (if you saved it off), do diplo and run/upload your turn without saving again.

Re: trade/gift bug???
 

Ya, what Slynky just said is exactly what I do, and I haven't seen this problem since I've been doing this. (For whatever that datum is worth.)

PvK