setting up frequency with wireless-fp

Hello

I have a problem setting up frequency on some of my routerboards when wireless-fp package is enabled.
For example on Omnitik with 6.25 I have tried to set 5680

19:41:36 system,info device changed by admin
19:41:41 wireless,debug wlan1: must select channel
19:41:41 wireless,debug wlan1: selected channel 5260000

as you can see below it should be 5680, but when I change any setting it is scanning for a while and after set like on auto mode.

Flags: X - disabled, R - running
0 R name=“wlan1” mtu=1500 mac-address=00:0C:42:x:X:X arp=enabled
interface-type=Atheros AR92xx mode=ap-bridge ssid=“ssid”
frequency=5680 band=5ghz-a channel-width=20mhz scan-list=default
wireless-protocol=802.11 vlan-mode=no-tag vlan-id=1 wds-mode=disabled
wds-default-bridge=none wds-ignore-ssid=no bridge-mode=enabled
default-authentication=yes default-forwarding=yes default-ap-tx-limit=0
default-client-tx-limit=0 hide-ssid=no security-profile=default
compression=no


It was the same with 6.18, 6.19, 6.22 on this device. I have this issue also on RB912/911. Disabling fp package helps with it.

best regards