there are some operational command inside vrf on ISIS protocols that it doesn't work :
vyos@vyos:~$ show isis vrf TEST1 neighbor
vyos@vyos:~$
vyos@vyos:~$ show isis vrf TEST1 route
vyos@vyos:~$
vyos@vyos:~$ show isis vrf TEST1 summary
vrf : TEST1
Process Id : 1109
System Id : 1920.0000.0011
Up time : 00:16:50 ago
Number of areas : 1
Area VyOS:
Net: 49.0001.1920.0000.0011.00
TX counters per PDU type:
L1 IIH: 356
L1 LSP: 3
L1 PSNP: 1
LSP RXMT: 0
RX counters per PDU type:
L1 IIH: 342
L1 LSP: 5
L1 CSNP: 107
Level-1:
LSP0 regenerated: 4
LSPs purged: 0
SPF:
minimum interval : 1
IPv4 route computation:
last run elapsed : 00:01:16 ago
last run duration : 37 usec
run count : 9
IPv6 route computation:
last run elapsed : 00:01:16 ago
last run duration : 9 usec
run count : 9
Level-2:
LSP0 regenerated: 4
LSPs purged: 0
SPF:
minimum interval : 1
IPv4 route computation:
last run elapsed : 00:01:07 ago
last run duration : 265 usec
run count : 4
IPv6 route computation:
last run elapsed : 00:01:07 ago
last run duration : 107 usec
run count : 4
`this bug was getting from https://forum.vyos.io/t/isis-in-vrf-neighbor-relationship-doesnt-showing-up/10738