For nested repeating group elements, the outer repeating groups do not auto-scroll when dragging elements in the nested repeating group if the inner one is not scrollable. This is something that our engineering team is aware of. At this time, we recommend that you avoid using nested repeating groups for dropzones.
Why doesn't a Drag/Drop Group placed in a nested Repeating Group trigger auto-scroll when dragged to end of group?
Written by Support Bubble