If you perform group editing (objects are selected by CTRL+SHIFT+D) and some selected objects are invisible because they are in collapsed ranges, then the editing result may be incorrect in these collapsed ranges.
For example, press the -> button, and then <-, then inside the collapsed cursor will move incorrectly and if there were several selections, then the cursor will remain alone (again inside the collapsed one)
If you do as I described above and expand the collapsed section, then when you press -> and <- the cursors in the expanded section behave correctly, but if the section is collapsed, then the cursors in it do not behave correctly when you press -> and <- (if you expand , then you can see that the cursors are not in their places)
but if you move the cursor using the -> or <- keys, pressing them several times, then the cursor will be out of place (and only one instead of several)