Panels are missing - what to do?

[Alarik]

Ubuntu mate Panel disappeared

I've just installed ubuntu mate 19.04, coming from mate 16.04. I upgraded to 19.04 because I recently had intermittent problem with error saying "Attempt to read or write outside of disk 'hd0' ". I did some research and someone suggest that the boot partition should be GPT not MBR so I wiped my boot drive. then I set the partition table to GPT. So after19.04 installation, all is well. since /home is separated on other drive, all my old configs are retained. I see my mate panel is cluttered an…

This is and older post but might be of help and provide a quick solution

MATE panel not showing

This as well