Scrolling up with dynamic content on iOS

[adrigzr]

Scrolling up with dynamic content on iOS is not working properly.

It can be tested on demo page: https://html-next.github.io/vertical-collection/#/examples/flexible-layout

As you can see, when you scroll up, the viewport glitches and moves elements around.

Video:

Edit: added video.

[pzuraq]

Unfortunately I haven't had time to work on this library recently, and am unsure when I will 😕 However, I do have some ideas for a restructure that will simplify the code a lot. Basically, take advantage of scroll-anchoring which is now rolling out (could be the cause of this bug actually) in browsers as standard. I also think the scheduling needs to be reworked overall.