CurrentNode of nodes added using dynamicNodeProvider is null

[VaishaliSelvam]

I am having 3 level hierarchy of nodes. I am adding child nodes to the below node using dynamicNodeProvider. When I click on these childNodes at runtime, SiteMaps.Current.CurrentNode is null for it

mvcSiteMapNode title="FirstNode" dynamicNodeProvider="Project.Website.MvcSiteMap,Project" key="FirstNode1"
mvcSiteMapNode

I am currently using 4.6.22 version of MVCSiteMapProvider