In Polymer 2.0, Polymer.dom.flush doesn't flush the work scheduled by templatizer anymore. Therefore,window.flush should probably also call Polymer.Templatizer.flush when available.
cc @e111077, @FredKSchott
The intention is for Polymer.dom.flush to call Polymer.Templatizer.flush, so the change should be in Polymer, covered by: Polymer/polymer#4062
Ok, then closing this one.