Object half disappearing during animation on mobile Safari

[Mike H D]

Hi,

 

I have a card flipping animation working perfectly everywhere apart from mobile Safari. In that browser, as the card flips it half disappears. I think this is due to one of the parent elements having a white background, and my card is rotating below that if that makes sense. At the end of the animation the whole card is visible again.

 

This is my code:

 

gsap.utils.toArray(".card-wrapper").forEach(function(card) {
      gsap.set(card, {
        transformStyle: "preserve-3d",
        transformPerspective: 1000
      });
      const q = gsap.utils.selector(card);
      const front = q(".front");
      const back = q(".back");
      
      gsap.set(back, { rotationY:-180 });
      
      const tl = gsap.timeline({ paused: true })
        .to(front, { duration: 1, rotationY: 180 })
        .to(back, { duration: 1, rotationY: 0, rotationZ: "random(-6, 6)" }, 0)
        .to(card, { z: 50 }, 0)
        .to(card, { z: 0 }, 0.5)
        tl.reverse();
      card.addEventListener("click", function() {
        tl.reversed() ? tl.play() : tl.reverse();
      });
    });

I think what I need to do is lift the whole thing up on the z axis, so when it spins with rotationY it doesn't intersect with what is below it. I am not sure how to do this without it affecting the perspective, which is looking really nice when it spins.

[GSAP Helper]

It's pretty tough to troubleshoot without a minimal demo - the issue could be caused by CSS, markup, a third party library, your browser, an external script that's totally unrelated to GSAP, etc. Would you please provide a very simple CodePen or CodeSandbox that demonstrates the issue? 

 

Please don't include your whole project. Just some colored <div> elements and the GSAP code is best (avoid frameworks if possible). See if you can recreate the issue with as few dependancies as possible. If not, incrementally add code bit by bit until it breaks. Usually people solve their own issues during this process! If not, then at least we have a reduced test case which greatly increases your chances of getting a relevant answer.

 

Here's a starter CodePen that loads all the plugins. Just click "fork" at the bottom right and make your minimal demo: 

See the Pen aYYOdN by GreenSock (@GreenSock) on CodePen

 

If you're using something like React/Next/Vue/Nuxt or some other framework, you may find StackBlitz easier to use. We have a series of collections with different templates for you to get started on these different frameworks: React/Next/Vue/Nuxt.

 

Once we see an isolated demo, we'll do our best to jump in and help with your GSAP-specific questions. 

[mvaneijgen]

I think you'll need to add  backface-visibility: hidden; to some element in your CSS, but its hard to debug without a minimal demo.

 

Random pen I've found with cards flipping and this property in CSS

See the Pen PWozML?editors=1100 by gregh (@gregh) on CodePen

[geedix]

Just out of curiosity, I made a pen of it: 

See the Pen abRdEBL by geedix (@geedix) on CodePen

I learned that Safari mobile is buggy in a unique way without the backface-visibility hidden style.