pfSense

Tested on the:

2.7.0-DEVELOPMENT (amd64)
built on Fri Oct 14 06:04:12 UTC 2022
FreeBSD 14.0-CURRENT

I can confirm this behavior.

The same happens if you try to change the gateway from the console using Option 2) Set Interface(s) IP Address

Crash report begins.  Anonymous machine information:

amd64
14.0-CURRENT
FreeBSD 14.0-CURRENT #0 devel-main-n255799-28f6f5e488e: Fri Oct 14 06:28:01 UTC 2022     root@freebsd:/var/jenkins/workspace/pfSense-CE-snapshots-master-main/obj/amd64/5sNqxS3O/var/jenkins/workspace/pfSense-CE-snapshots-master-main/sources/FreeBSD-src-dev

Crash report details:

PHP Errors:
[15-Oct-2022 07:36:52 Etc/UTC] PHP Fatal error:  Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /etc/inc/config.lib.inc:1205
Stack trace:
#0 /etc/inc/config.lib.inc(1205): implode('/', 'gateways')
#1 /etc/rc.initial.setlanip(248): init_config_arr('gateways')
#2 /etc/rc.initial.setlanip(361): add_gateway_to_config('wan', '192.168.33.1', 'inet', false)
#3 /etc/rc.initial.setlanip(375): console_configure_ip_address(4)
#4 {main}
  thrown in /etc/inc/config.lib.inc on line 1205
[15-Oct-2022 07:40:26 Etc/UTC] PHP Fatal error:  Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /etc/inc/config.lib.inc:1205
Stack trace:
#0 /etc/inc/config.lib.inc(1205): implode('/', 'gateways')
#1 /etc/rc.initial.setlanip(248): init_config_arr('gateways')
#2 /etc/rc.initial.setlanip(361): add_gateway_to_config('wan', '192.168.33.1', 'inet', false)
#3 /etc/rc.initial.setlanip(375): console_configure_ip_address(4)
#4 {main}
  thrown in /etc/inc/config.lib.inc on line 1205

No FreeBSD crash data found.

It works fine if you choose DHCP to assign an IP address and gateway.

Applied in changeset 9178a64972685f1e66dd4429e37becdcad47ac99.