MT3000 Beryl AX in AP mode MAC bug

I found a bug
Every time I upgrade (2 times now) this router that is in AP wi-fi mode MAC is changing +1 and then DHCP give new IP, could be hard to find new IP for same users etc. MAC was XX:XX:XX:XX:XX:f0 after 1st upgrade XX:XX:XX:XX:XX:fa and after 2nd upgrade XX:XX:XX:XX:XX:fb.