Quoting Sub Documents in Xwiki 2.1 Syntax Not Supported

It currently does not seem to be possible to include whole sub documents in quoted text areas:

> (((
Subdocument
))) 

leads to:

After editing it with CKEditor, it's garbled / transformed into the different

>

(((
Subdocument
)))

This makes it impossible to quote any complex sections from documents / emails / other sources which possibly contain list structures or tables.