When handling a node inserted mutation event we should make sure the node is in the DOM tree first, it may have been removed again subsequently
When handling a node inserted mutation event we should make sure the node is in the DOM tree first, it may have been removed again subsequently

Fiware/webui.Xml3d.js,xml3d/xml3d.js,xml3d/xml3d.js,Fiware/webui.Xml3d.js