I don’t know how I can get rid of these layout problems with those lists (groups, other layout settings, screen height (currently 800) ??). I would like to make sure my list top and bottom are fixed regarding the other elements
Just in case: if you enable “Sticky while scrolling”, this means the element should remain at the same vertical position on the screen, irrespective of the screen scroll.
This is usually used for top navigation bar, bottom menu, floating action button.
If you enable this for the list - the list will not scroll.
Do you mean that your issue #2 is still present when you disable “sticky while scrolling”? If yes - you need to check if there is another component (parent or child) has this option enabled.