After certain submit buttons, the smackchat is doubled.
Example 1
Create a game.
Change you CIV, click “Change Civ” and note the extra “Start Discussion”
Example 2
Here is what I experienced.
Create a passworded game.
Enter some smack chats, say 3 items.
Go to the game as another user that has to enter the password to join.
Note the duplication of the whole smackchat.