Describe the bug

Reproduction

https://cientos.tresjs.org/guide/staging/environment.html

Steps to reproduce

• Visit: https://cientos.tresjs.org/guide/staging/environment.html
• See first demo – stays at 'Loading ... 0%'

System Info

Tested in latest FF on Mac

Used Package Manager

npm

Code of Conduct

• I agree to follow this project's Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• The provided reproduction is a minimal reproducible example of the bug.