(sorry for reviving this old thread)
Could you let us know what was the feedback of Bubble’s support team regarding your bug report?
I am considering filling one too, because after experimenting for a while, I noticed that for me the problem is due to my cells’ height being (on purpose) reduced by hidden groups with the “collapse this element’s height when hidden” option activated.
Bubble seems to be calculating the number of cells to load for the extended vertical scrolling setup based on the full height a cell can take, and not based on the actual visible height.
It’s a real issue in terms of UX. Users who do not have a pad or a mouse enabling them to scroll cannot show the additional cells (unless they resize the browser window), nor can they guess that there are more cells than what they see, because a scrollbar won’t necessarily be offered by the browser (which seems somewhat confused with the overall page height).
This is problematic because it prevents a lot of design arrangements to work in the expected manner, and it’s quite often very hard to come up with designs that would. In my example above, the hidden group is a DropArea, enabling users to rearrange rows by dragging and dropping. I can’t make the DropArea visible at all times, this would be a really poor design, and I would lose the visual effect of row “insertion” users are so familiar with…