adding all applications from an overview group to favorites makes the group unremovable
Drag several applications in the show applications feature together into a single group (subfolder?), then add all of them into favorites. The group remains visible as it was when last edited, but when opened, it's empty and it cannot be removed (only by dragging something else to it and back) as all applications in it should, supposedly, no longer display in the overview, just the favorites bar.
(gnome-shell-40.2-1.fc34.x86_64 on fedora 34)