Bug 212686

Summary:	[Web Animations] Rotation Easing Not Respected - Treated only as linear - polyfill doesn't work
Product:	WebKit	Reporter:	travis
Component:	Animations	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	dino, graouts, graouts, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description travis 2020-06-02 22:29:30 PDT

Rotated elements animate, but only linear easing is applied even if any other type of easing is specified.
Prior to 13.1, I beieve behaviour used to be manageable by including the web-animations.js polyfill, but now this is not the case.

https://codepen.io/createwithflow/pen/JjGjWGq

May be similar to: https://bugs.webkit.org/show_bug.cgi?id=203476
However, the issue above is not dealing with CSSTransition.

Comment 1 Antoine Quint 2020-06-05 01:31:11 PDT

Thanks for filing this bug Travis. This is already fixed and you can see the correct behavior in Safari Technology Preview. This is most likely a duplicate of bug 210526.

*** This bug has been marked as a duplicate of bug 210526 ***

Comment 2 travis 2020-06-05 01:37:08 PDT

Ah, great and apologies for the dupe. 
I even had a copy of the tech preview, I'll be more careful to review the list of open / closed bugs.
This was my first ticket.
T

Comment 3 Antoine Quint 2020-06-05 01:52:15 PDT

No need to apologize, it's a lot more valuable to file a potential duplicate than not to file a bug assuming it might be.

Comment 4 Radar WebKit Bug Importer 2020-06-05 09:57:28 PDT

<rdar://problem/64033251>