It seems that `NetworkManager.conf.5` manual page in all recent rhel-8 packages are zero bytes.
This must be fixed.
Also, we tend to use pre-generated documentation from the upstream package. But the documentation is possibly pregenerated with different default, so there is a patch "9999-fix-pregen-doc.patch" to adjust that. Currently this patch does not apply, we need to see which documentation needs to be fixed.
Ah, I made a mistake...
I was looking at the RPM and saw NetworkManager.conf.5.gz having zero bytes.
But actually, the RPM links it to nm-system-settings.conf.5.gz, and when installing,
all is good.
Closing.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2019:3623