[Naiya]

I was using a modded UI for a short time as well. It tended to bork my chat occasionally (though I never thought about a connection between diplo quests and the chat borks... I didn't pay that close attention)

I went back to the basic UI for test purity purposes but I cannot make the chat screw up anymore.

I guess what I'm saying is, even if it is inconsistent, try to replicate it with the in game UI. if you can't get it to dup, I'd chalk it up to the UI.

This is in no way a knock against modded UI's. I am QA for a game where the community mods the base UI all the time. But this *is* a valid trouble shooting step.

Another valid trouble shooting step is to make note of the quests this happens on. If the same quest is giving many people trouble, it could be a timing/clickbox/active area border error

just a few thoughts