Since this could be used as boxpointer source, it should be marked as mapped,
or it will be ignored.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/435
// A dummy actor that tracks the mouse or text cursor, based on the
// position and size set in setDummyCursorGeometry.
- this.dummyCursor = new St.Widget({ width: 0, height: 0, visible: false });
+ this.dummyCursor = new St.Widget({ width: 0, height: 0, opacity: 0 });
this.uiGroup.add_actor(this.dummyCursor);
global.stage.remove_actor(global.top_window_group);