User "Bön" with password "abc" can not log in using Spark.Spark is anyhow able to create such accounts using In-Band Registration.
According to this post ( http://www.igniterealtime.org/community/message/173182?tstart=0#173182 ) it's been fixed.
http://www.igniterealtime.org/community/thread/30365?tstart=0
2.5 may fix euroean characters,but Chinese characters still don't work.
User "Bön" with password "abc" can not log in using Spark.
Spark is anyhow able to create such accounts using In-Band Registration.