A PR for this was initially opened here but the change was rolled back since it required a few more changes outside the scope of the PR (CesiumGS/cesium#9063 (comment)).

I believe this is all the changes required:

• In EasingFunction.js, change QUADRACTIC_IN, QUADRACTIC_OUT, QUADRACTIC_IN_OUT to the correct spelling
• Update the spec in `TweenCol

https://github.com/donmccurdy/glTF-Generator-Registry

In addPipelineExtras, a _pipeline object with a source is added to the extras of each buffer, so it can be used in https://github.com/CesiumGS/gltf-pipeline/blob/47e25f05dcb86d271675f9b5fa5be8dee8205b55/lib/mergeBuffers.js#L29

If a custom stage adds a buffer, it will not have a extras._pipeline object and therefore, will cause a crash in the line above.

A possible solution would

Description:
After editing a scene, returning 'Back to Projects' still shows the previously edited scene name in the browser tab title. This occurs in Firefox and Edge, although I'm guessing it would occur in any browser.

Steps:

1. Go to hubs.mozilla.com/spoke
2. Create a new scene or edit an existing one (note the name)
3. Save, then go to hamburger menu-->Back to Projects
4. Re

Currently all render engines come with different background colors. That makes comparing colors between renderers harder, especially for transparencies.

Would be great if all render engines could use a similar/the same background color by default.

![20200826-223937]