Yes, sorry, the correct link is https://www.apple.com/ca/apple-events/september-2019/. I'll change the description. And yeah, on mobile the markup is different, I get default controls in Firefox an in Chrome. The issue is with the default controls. An example https://codepen.io/ksy36/pen/dyPaopz illustrates the behavior - when the video element is small enough, a container with captions is cut off (this is reproducible on desktop)
Bug 1610899 Comment 3 Edit History
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Yes, sorry, the correct link is https://www.apple.com/ca/apple-events/september-2019/. I'll change the description. And yeah, on mobile the markup is different, I get default controls in Firefox and in Chrome. The issue is with the default controls. An example https://codepen.io/ksy36/pen/dyPaopz illustrates the behavior - when the video element is small enough, a container with captions is cut off (this is reproducible on desktop)