I noticed these graphical trailing bugs when interacting with these models. This happens on the latest versions of Chrome, Firefox and Safari which makes me believe this is actually a GPU driver bug. I haven’t yet seen it though on any other WebGL experiences / viewers so it probably is something in a shader that is causing the problem (maybe some postprocessing step?)
This is happening for all models I’ve seen so far both in the embedded viewer and on the website in varying degrees.
Tim van Scherpenzeel