From what you are explaining and what I am aware of, this is indeed a bug.
For quick reply, I advise you to type a quick message in the general English in-game chat. It would help the developers to take note of this problem.
If you still have your game archived, it is better to share it with your message.
You can also post this message in the form's Bug Report section : http://forum.uniwar.com/forums/show/14.page