OPNsense 19.1.6-amd64
FreeBSD 11.2-RELEASE-p9-HBSD
OpenSSL 1.0.2r 26 Feb 2019
with FRR package installed and up & running, under "Routing: Diagnostics: General" IPv4 is all empty. The IPv6 tab shows information on connected and other routes.
I have the same problem.
Edit:
Works on VM
Does not work on 2x APU2