Check if the replaced instanceTemplate needs to be restored before trying to do so.
Check if the replaced instanceTemplate needs to be restored before trying to do so.

sankethkatta/web-component-tester,hvdb/web-component-tester,marcinkubicki/web-component-tester,Polymer/web-component-tester,fearphage/web-component-tester,Polymer/tools,fearphage/web-component-tester,sankethkatta/web-component-tester,marcinkubicki/web-component-tester,Polymer/tools,robdodson/web-component-tester,Polymer/web-component-tester,robdodson/web-component-tester,Polymer/web-component-tester,hypnoce/web-component-tester,sankethkatta/web-component-tester,fearphage/web-component-tester,hypnoce/web-component-tester,Polymer/tools,hvdb/web-component-tester,hvdb/web-component-tester,marcinkubicki/web-component-tester,Polymer/tools