A new dialog was created that '''merges the functionality of the familiar 'Layers' and 'Objects' dialogs''', with better performance ([https://gitlab.com/inkscape/inkscape/-/merge_requests/2466 MR #2466], [https://gitlab.com/inkscape/inkscape/-/merge_requests/3635 MR #3635], [https://gitlab.com/inkscape/inkscape/-/merge_requests/2466 MR #2466], [https://gitlab.com/inkscape/inkscape/-/merge_requests/3741 MR #3741], [https://gitlab.com/inkscape/inkscape/-/merge_requests/3597 MR #3597], [https://gitlab.com/inkscape/inkscape/-/merge_requests/3645 MR #3645]).
A new dialog was created that merges the functionality of the familiar 'Layers' and 'Objects' dialogs, with better performance (MR #2466, MR #3635, MR #2466, MR #3741, MR #3597, MR #3645).