I guess this is something I have done at this end but, although it works fine as a normal user (right click and open new instance), when trying to open any folder from Caja as administrator (right click on folder in Caja, select open as administrator) I get the message:
"Please start Chromium as a normal user. If you need to run as root for development, re-run with the - no-sandbox flag." I wasn't aware of trying to run Chromium at all, it used to open a separate instance of Caja with su privileges. Anyone else or something I have done badly somewhere and forgotten about? Debian Testing(Buster) Mate 1.18.0 Caja 1.18.3 TIA,