While restarting STATION loosing connectivity with AP

Link on RB411AH
mode station bridge
On station: IP on Wifi interface
On AP: IP on bridge which contains eth1 and wifi interfaces

While restarting Station after 1-2 seconds loosing IP connectivity with AP.
Still can connect by mac. Tested if loosing IP connetivity from station to network: yes, while connected by mac loosing IP connection with gateway (ping test)
Tested RouterOS: 5.12, 5.11, 5.10, 5.9…

While second link on RB411AH, RouterOS 5.7, wifi mode station WDS not loosing IP connectivity with AP while restarting station.
Only difference is wifi modes : Station Bridge and Station WDS
Protocols on both links: NV2

Station WDS is real working link with vlans on it and ip addresses on bridge which contain wifi+vlan1(mgmt) interface
Station bridge link is simple test link with simplest configration without vlans

Both links have: Ubiquity SR71-15 wifi cards on board.

Any ideas/solutions ?

set an admin-mac on your bridge.

thanks
worked