Sorry no saves as it happened really quickly and I wasn't thinking about it. But it has happened a few times.
Civs who you were friendly with at some point but are now guarded and may have denounced with will sometimes still remember old trades and they will call you up to suggest it. But as soon as you hit accept, they will reject it because of the pricing differences due to their current approach to you. If you ask them 'what will you trade for this' during the meeting, they will change the items on the table to a different trade where you give up more to account for the diplo penalty.
This seems like a bug.
Civs who you were friendly with at some point but are now guarded and may have denounced with will sometimes still remember old trades and they will call you up to suggest it. But as soon as you hit accept, they will reject it because of the pricing differences due to their current approach to you. If you ask them 'what will you trade for this' during the meeting, they will change the items on the table to a different trade where you give up more to account for the diplo penalty.
This seems like a bug.
