Brave mobile: CSS dropped keyframes and animation-delay

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css keyframe animations, such as animating a translationX on an element appears to drop frames. The effect is noticeable the fewer the frames, the faster the animation. An animation with 100 frames seems smooth but with 2 frames simply jumps to the finish. The cause appears to be animation-delay, which should be 0 by default. In fact, setting it to 0 has no affect, the animation has a noticeable delay. This seems to cause a dropping of a fixed quantity of keyframes which is, of course, is very noticeable when the number of keyframes is small (eg: it drops the first 2 of 3 keyframes) but when the number of keyframes is larger, the few dropped keyframes aren’t very noticeable.

In fact I can make it smooth by adding some “throw away” keyframes to the animation. But this disrupts the animation on other browsers.

Expected result:
smooth keyframe animation.

Brave Version( check About Brave):
1.39.1 (

Mobile Device details
IOS latest, brave latest, iPhone 13Pro

Additional Information:
works correctly on Brave desktop, Safari mobile, Chrome mobile. Only fails on Brave mobile (IOS)

Hi and welcome to the community. :slightly_smiling_face: I know nothing about ios or what you are talking about! Sorry. I did notice there is a new Brave Release version 1.40 in the App Store. You might want to update Brave and see if that solves your problem.

I’m also posting a closed Brave GitHub issue report that may be related. You might want to search the GitHub brave/brave-ios issues, both closed and open, to see if there is anything there related.

Hopefully someone who knows what the heck you are talking about pops in to help troubleshoot. :wink:

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