I created LDAP User Picker. Added it to Screen and try created issue.
We can't create this issue for you right now, it could be due to unsupported content you've entered into one or more of the issue fields. If this situation persists, contact your administrator as they'll be able to access more specific information in the log file.
When picker is loaded. if picker is cleared issue created fine. But then if issue Edit so infinity loaded edit screen. Nuff Said.
Settings
All instance on UTF-8
Field
Search attribute
msDS-PhoneticDisplayName
Display attribute
msDS-PhoneticDisplayName
In preview all works.