I had the same issues with our project. In the end the ListenListViewSetter turned out to be the widget messing with all other widgets. Removing this widget made sure the other widgets worked again.
Hi Russel,
What IE version are you using (only IE 11 is supported)? I've run into the same issue with the feedback widget in IE. Recently I saw the developer for this widget post about a big update and he said that IE11 is still supported. I would try updating your widget to see if that resolves the issue.
Same with the html snippet.