gltf/Nerves doesn't seem to work in Safari

[jalovisko]

Describe the bug
The gltf/Nerves example shows blank screen after loading in Safari

To Reproduce
Steps to reproduce the behavior:

1. Go to https://xeogl.org/examples/#importing_gltf_Nerves using Safari
2. Wait for the blank screen

Expected behavior
The model would open just like in other browser. It works in Chrome.

Screenshots

Desktop (please complete the following information):

• OS: macOS Catalina 10.15.4
• Browser: Safari
• Version: 13.1