just wanted to let u know … i see jitter when i use the parallax effect in page header on my mobile ( iOS ) but only in Low Power mode! … so this has nothing to do with you in the first place.
But, here is my question: I wanted to disable parallax on the mobile and found this Post here. But your CSS doesn’t seem to work anymore. Has the selector changed ? I use the Posts Featured Image.
Yes, the selector has likely changed as the Page Header module is now deprecated. If you can open a new topic with your website URL we can provide the updated CSS.