Hello YongKoo Kang,
Thank you for reaching us.
We have already identified this issue and we will take it into consideration as soon as possible.
As you have mentioned, the workaround
is to set
property of the Telerik.Windows.Controls reference
We really appreciate your feedback. Do not hesitate to contact us in case any questions arise.
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.