Hey 동헌 이 ,
What operating system are you using as well as what version of Gameshow?
Please try resetting the preferences within Gameshow followed by launching into a new document and let me know what you experience.
To reset the preferences, please go into the Help tab and select Send Support Information. At the preceding page, you should be able to reset the preferences from the bottom left.
Once you do so, please launch into a new document and let me know what you experience when you add the chat widget.