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Mon Feb 27 2017 18:05:41 UTC
When Xamarin completely support WCF, maybe no one use WCF on the server anymore
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ID Product Comp Assignee Status Resolution Summary Changed
9996 Class Li System bugzilla NEW --- [patch] [System.Runtime.Serialization] exception thrown when a type with [XmlSchemaProvider(MethodName=null)] is added to KnownTypeCollection 2013-03-18
23641 Class Li System bugzilla NEW --- SocketAsyncEventArgs.DispatcherCB throw Unhandled Exception 2014-10-06
2 bugs found.

as

File a new bug in the "System" component of the "Class Libraries" product