Ok, well, rebooted and no go. It doesn’t look like webgl is crashing but there are a couple script errors. I tested a different canvas/webgl/threejs web app with a high poly model and it worked fine. I’ll dig a little more.
Maybe try deleting your “last-imported” localstorage item. It might be crashing on trying to load that? Run localStorage.removeItem(‘last-imported’); from the Javascript debug console in the browser on that page.
If you know Javascript, any chance you might be interested in adding that code? It’s happened only a few times to users in the past, but it can sometimes happen as you saw.