Updates to keyed lists break FLIP animations when they occur mid-animation

[dead-claudia]

Before submitting an issue please:

• Check that you are using the latest version of Inferno. Either using our CDN @ Master or by checking the tags on NPM.
• Check that the bug has not been fixed in the latest development version. Use our CDN @ Edge.
• Check that the issue has not been brought up before on Github issues.

If you can, please distill your problem down and include a JSFiddle example for illustration. Also when requesting bug fix please include at least one test to avoid regression.

Inferno version: 7.4.2

Steps to reproduce:

1. Open this Flems link

Expected: The animation to be smooth like in this near-identical vanilla version

Actual: The animation is choppy.

Edit: Inferno is far from the only one affected https://twitter.com/isiahmeadows1/status/1284726730574315522

Also relevant: https://github.com/whatwg/html/issues/5742

[Havunen]

Is this something what new inferno animation package will solve @jhsware ?

[jhsware]

Yes @Havunen, this should be solved by inferno-animation. The Shuffle w. Anim test in inferno/docs/animations-demo/index.html doesn't shuffle the keys (it shuffles the items) but it should be equivalent behaviour.

[jhsware]

@Havunen this is fixed as of https://github.com/infernojs/inferno/releases/tag/v8.0.0-alpha.0