I am using a slider with background images using the CMS. This was working fine and now it's not. I also found someone with the same issue https://forum.webflow.com/t/cms-slider-not-showing-on-mobile-devices-help/41385
Here is how it looks https://cl.ly/1e071A3g0u0A
You can see the issue if you go to a collection template such as residentials or boutique hotel.