bad network interface configuration in config.json jail file

In a Jail / Basic properties,
- uncheck DHCP
- uncheck NAT
- uncheck VNET
- uncheck BPF
> selecting interface, for exemple: igb1: aux 
it generate  "ip4_addr": "igb1: aux |x.x.x.x/xx" in config.json and it's wrong,
generated line need to be "ip4_addr": "igb1|x.x.x.x/xx" (it put the full label instead of interface name)