'info vnc' monitor command does not show websocket information

Steps to reproduce^
1. run
 qemu-system-x86_64  -vnc  0.0.0.0:1,websocket=5701 -nographic -monitor stdio

2. then type 
 (qemu) info vnc
3.  see
     address: 0.0.0.0:5901
        auth: none
Client: none

There is no information about websocket parameters, but 'netstat -nltp' shows me:
 ...
tcp        0      0 0.0.0.0:5701            0.0.0.0:*               LISTEN      27073/qemu-system-x
....