CSS Animations not working on iOS

Description of the issue:

Some CSS animations don’t seem to be working on Brave for iOS.

How can this issue be reproduced?

This Codepen shows an example of an animation that fails

Expected result:

The circle should flip around when clicked. On Safari and Chrome this works, but on Brave it doesn’t animate.

Brave Version( check About Brave):
Version 1.35.1 (
Device iPhone14,2 (iOS 15.3.1)

Mobile Device details
iPhone 13 Pro, iOS 15.3.1

I can confirm this issue, I found out about this developing a website.
animation-delay is not working properly. it just take a long time to start the animation.

You can access here and check the spinner it doesn’t start at the beginning

Brave Version( check About Brave ):
Version 1.35.1 (

Mobile Device details
iPhone 13 Pro, iOS 15.3.1
iPhone 11, iOS 15

I tried from Safari and I can’t reproduce the issue, also tried from chrome and there is a delay but almost unnoticeable

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