Hi Youngjin,
Thanks for using Syncfusion products.
The issue "Orthogonal connector is not properly routed" reported by you is an already known issue and the issue has been fixed in the latest version. For this, Please create a DT incident for your query so that we can update the patch for this issue.
You can create the DT incident from the following link.
<
http://www.syncfusion.com/account/dashboard>In the interests of maintaining confidentiality, we have a policy of not sharing patches or otherwise proprietary customer specific information in the public Forum.
Please let me know your concerns.
Regards,
Amsath Ali.M