On 1.2.4 we could add a server with server:port when syslog is running on a different port.
This options seems to be lost when adding a syslog server on 1.2.5.
Set failed
"set 'system' 'syslog' 'host' 'server.somewhere.com:9100' 'facility' 'all' 'level' 'notice'" failed
Also the boot after the upgrade shows:
[ 335.048074] vyos-router[1455]: Starting VyOS router: migrate rl-system firewall configure failed!
[ 335.898533] vyos-config[8106]: Configuration error