"Source code styling is enabled" but it does not really work

Hi all:

I have been building GDB from source for a while, but I recently upgraded my system to Ubuntu 20.04, which already has the latest 9.2 
release, so I started using it instead.

I then realised that syntax highlighting was not working, or like GDB calls it, "source code styling".

I wanted to keep using the only pretty thing there is in GDB 8-) , so I started to investigate:

Command "show style" says "Source code styling is enabled."
Command "show style sources" says "Source code styling is enabled."

I then saw this bug on another Linux distribution:

https://bugs.archlinux.org/task/62702

Notice how the author is using ldd and grepping for the library name.

I guess that Ubuntu's build of GDB does not have source code styling enabled or built-in.

But should commands "show style" and "show style sources" not say so? It is confusing that they say "enabled", but then it does not really work.

Or am I missing something here?

Regards,
   rdiez