[FIX] RenderEngine: Fixed root element processing
[FIX] RenderEngine: Fixed root element processing

MarkusTeufelberger/openerp-web,MarkusTeufelberger/openerp-web,splbio/openerp-web,splbio/openerp-web,splbio/openerp-web,gisce/openerp-web,gisce/openerp-web,MarkusTeufelberger/openerp-web,gisce/openerp-web