Pause Autoplay when the slick element is out of viewport

It is more of a feature than a bug. And when it is not available, it is no bug, just lack of feature :)

A few solutions:

1. The easiest, use Splide instead. Be sure to install the relevant plugins: https://git.drupalcode.org/project/splide/-/tree/1.0.x/docs#plugins. Another reason why it is a feature.
2. Use Blazy image/ media formatter, and reacts on bio.intersecting to turn on, and the class changes to turn on and off the autoplay.
3. Use MutationObserver based on those class changes. Here is a sample from GridStack module.
4. Use dBlazy.isVisible() and do whatever you want given the visibility of the slider element.
5. Ask such a feature at the library page, or pay somebody to do the job for you.

Feel free to share how you come up.

Automatically closed - issue fixed for 2 weeks with no activity.