I want to select all groups so that I can bulk disable nesting-dependent shading. If I select a group and then select all (ctrl-A) everything gets selected and not just the groups. This is not aligned which how select all works for all other components in yEd. As an example, if you select an edge label and then ctrl-a, all edge labels are selected only. If you select an edge itself and then ctrl-a, all edges are selected only.