If we open the page properties, "page-path/jcr:content.1.json" request
is going and its taking the node values with first level, the
multicompositefield values are stored in inner levels, due to that those
values are not getting populated in the dialog.we can overcome this
behavior by changing the constant CQ.PAGE_PROPERTIES_MAX_RECURSION_LEVEL
value,this constant value controls the maximum depth of the node subtree
under the page /jcr:content node, this can be change by overlaying the
constants...