It would be nice if the 3D widget would support line traces with the umg elements as a hit result or some other feedback.
That way it could also work for VR GUI where you have the gaze or a vector from the controller as input.
In the roadmap trello board there is mention of UMG for AAA , with VR UI’s mentioned… so maybe this is an idea being worked on. At least i suppose these bugs to be adressed.