The merge trades bug is still present. To test it start a game as USA and turn the trade control to manual. After you have approved some trades from South American countries click "merge trades form all countries" and see what happens 
This was already present at V1.05, so it's not a new one. I've reported this one earlier, but couldn't find the thread.
EDIT: Sorry. Wrong place. I've made a new one in bugs section.
This was already present at V1.05, so it's not a new one. I've reported this one earlier, but couldn't find the thread.
EDIT: Sorry. Wrong place. I've made a new one in bugs section.