LOKView is broken
gnome-documents 3.32.0 on Fedora 30
Trying to open some of the documents from https://gitlab.gnome.org/Teams/Engagement/gnome-demo-content/tree/master/DOCUMENTS fails with:
JS WARNING: [resource:///org/gnome/Documents/js/lokview.js 110]: reference to undefined property "overlay"
JS ERROR: Exception in callback for signal: window-mode-changed: TypeError: this.overlay is undefined