I don’t use RPi, but with my desktop I had a similar issue loosing all my panels. See my post here. I simply used Mate-Tweak and kept cycling through the various panels until my panels returned. No problems with panels ever since.
I don’t use RPi, but with my desktop I had a similar issue loosing all my panels. See my post here. I simply used Mate-Tweak and kept cycling through the various panels until my panels returned. No problems with panels ever since.