802.11s mt7613/7663 cannot get connection

AP1 (7613):
config wifi-iface 'wifinet3'
	option device 'radio1'
	option mode 'mesh'
	option encryption 'none'
	option mesh_id 'x-wrt-mesh-id'
	option mesh_fwding '1'
	option mesh_rssi_threshold '0'
	option network 'lan'

AP2 (7613):
config wifi-iface 'wifinet3'
	option device 'radio1'
	option mode 'mesh'
	option encryption 'none'
	option mesh_id 'x-wrt-mesh-id'
	option mesh_fwding '1'
	option mesh_rssi_threshold '0'
	option network 'lan'

802.11s never works on chip mt7613

# iwinfo wlan1 assoclist
No station connected


# iwinfo wlan1 info
wlan1     ESSID: "x-wrt-mesh-id"
          Access Point: 00:0F:43:26:60:00
          Mode: Mesh Point  Channel: 161 (5.805 GHz)
          Center Channel 1: 155 2: unknown
          Tx-Power: 19 dBm  Link Quality: unknown/70
          Signal: unknown  Noise: -92 dBm
          Bit Rate: unknown
          Encryption: none
          Type: nl80211  HW Mode(s): 802.11nac
          Hardware: 14C3:7663 14C3:7663 [MediaTek MT7613BE]
          TX power offset: none
          Frequency offset: none
          Supports VAPs: yes  PHY name: phy1

The payload names no source files or tests. Start by reproducing the two MT7613 mesh configurations and checking the iwinfo association state; done means 802.11s peers connect on the reported hardware instead of showing no station connected.