03-07-2022, 10:32 AM 
	
	
	
		Eventually upgraded my Ubuntu from 19.10 to 20.04. In the process a bunch of fonts are broken:
	
	
	
- Display as square with hex code
 - Seems to affect a bunch of "L" font : "URW Bookman L", "URW Palladio L", "Nimbus Sans L", "Century Schoolbook L"... while there are non-L versions
 - Also some others (Bitstream Charter, Courier, Courier 10...)
 - These fonts are found by the font manager (but not listed in some apps, such as LibreOffice)
 - I don't remember installing these fonts from other sources (I usually keep the downloaded ZIP around)
 


