Hi,
I tested again and you’re correct, one of them doesn’t work.
Examples/Emscripten/Cxx/ConeMultiBackend · master · VTK / VTK · GitLab (kitware.com)
This one works for me, just give it a little time as it loads a large number of actors.
Examples/Emscripten/Cxx/MultiCone · master · VTK / VTK · GitLab (kitware.com)
This one has a problem which sets the canvas height to “0”. I’ll debug it.