Bug in preview post alpha 35 that makes objects fly around all crazy (loaders?)

Dear Community,

I wanted to share a bug that started happening in ‘preview’ code last night (AFAIK isn’t ‘preview’ including changes after latest alpha release)? Our hanging piñata-inspired sculpture stopped coming down after being whacked, and was sort of stuck up in the sky and jittery. I rolled back to alpha 35 and replaced each external ‘preview’ library link with the local one one by one, and found that the problem seemed to be fully fixed after rolling back the dist/loaders/babylonjs.loaders.js specifically.

This video shows the before and after so you can see the bizarre issue.

I’m testing on
  • Mac OS X 10.13.6:
    ** Chrome Version 85.0.4183.83 (Official Build) (64-bit)
    ** Safari Version 85.0.4183.83 (Official Build) (64-bit)

  • and iPhone iOS 13.6
    ** Safari 13.1

There’s no change in the loader sources since 2020/08/24 (5 days ago) and alpha-35 is from 18h ago, so I don’t think your local loaders.js is from alpha-35: what is the version of the loaders that is working for you?

That should help us to find the changes that occurred between the version that works and the one that doesn’t.

Also a real repro would help a lot (in the playground)