This only happens when the following conditions are met:

1. IE browser
2. Windows system
3. Windows system location set to Japanese Region

1. Log in the instance with local user
2. Do not change anything on the page until session timeout (configured by system property glide.ui.session_timeout). The session timeout dialog appears.
3. The default encoding UTF-8 on the IE11 is changed to Shift JIS. The customer did not change, it changed automatically.

1. Use Chrome or Firefox
2. Set Windows system to English Region