Deleting and re-adding the widget doesn´t make any difference.
The firewall itself works fine.
I'm seeing the same thing.
Please see https://forum.opnsense.org/index.php?topic=36896.0
Widget still remains empty for me after reinstalling base and having Live view showing labels again
You may have been on a slow mirror, try reinstalling base again and reboot.
Please use the other thread.