If a player has a resource or commodity, their trading button has a countdown. The animation counts down, and after a set period, the trade is auto-rejected. Once all players have timed out, the trade offer clears and the window closes.
If a player has zero cards - no resources, no commodities - this does not work. The trade doesn’t count down. Unless the player with zero cards intentionally and manually clicks the X, the trade will NEVER automatically clear and close the window. For the active player, this can be quite annoying.
Please fix it. Players with zero cards should automatically reject, just like players who have enacted a trade embargo.