[Webkit-unassigned] [Bug 250516] New: [Web Animations] 'rotate' randomly switches direction or does nothing after multiple turns

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=250516

            Bug ID: 250516
           Summary: [Web Animations] 'rotate' randomly switches direction
                    or does nothing after multiple turns
           Product: WebKit
           Version: Safari 16
          Hardware: All
                OS: All
            Status: NEW
          Severity: Blocker
          Priority: P2
         Component: Animations
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: pizzahollandaise at gmail.com
                CC: dino at apple.com, graouts at apple.com

I need to create a card element that always flips in the same direction when clicked and the attached two snippets do exactly what I want but only when using Chrome and Firefox. When viewing the snippet on Safari on both iOS and MacOS, one encounters a weird issue where after approximately 20 clicks, the card flips randomly back and forth and becomes unpredictable as shown in the attached screen record. I tried to implement the desired behaviour in two different variants which I also attached, one using a counter variable and one using the Web Animations API. Both variants work fine under Firefox and Chrome and should also work according to the official specification but do not work under Safari without regard to the operating system or device.

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