UGH!
It’s happening again with a Shelly Uni device:
E8:68:E7:F4:6E:29@wlan3: disconnected, received deauth: 4-way handshake timeout (15), signal strength -78
# 1970-01-02 00:09:16 by RouterOS 7.10.2
# software id = D04C-WYEI
#
# model = RBwAPG-5HacD2HnD
# serial number = HDA
/interface bridge
add admin-mac=18:Fxxxxxxx auto-mac=no comment=defconf name=bridge
/interface ethernet
set [ find default-name=ether1 ] mac-address=18:FD:xxxxx
set [ find default-name=ether2 ] mac-address=18:Fxxxxxx
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-b/g/n country="united states3" \
disabled=no disconnect-timeout=15s frequency=auto mode=ap-bridge mtu=1492 \
name=wlan4 ssid=Chickens
set [ find default-name=wlan2 ] band=5ghz-a/n/ac channel-width=\
20/40/80mhz-eCee disabled=no frequency=auto mode=ap-bridge name=wlan5 \
ssid=Chickens-5ghz
add disabled=no mac-address=1A:FD:74:50:0F:CC master-interface=wlan4 mtu=1452 \
multicast-buffering=disabled name=wlan3 ssid=2point4 wds-cost-range=0 \
wds-default-cost=0 wps-mode=disabled
/interface list
add comment=defconf name=WAN
add comment=defconf name=LAN
/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa2-psk mode=dynamic-keys \
supplicant-identity=MikroTik
add authentication-types=wpa-psk,wpa2-psk group-key-update=1h mode=\
dynamic-keys name=wlan1-profile supplicant-identity=MikroTik
/interface bridge port
add bridge=bridge comment=defconf ingress-filtering=no interface=ether2
add bridge=bridge comment=defconf ingress-filtering=no interface=wlan4 learn=\
yes
add bridge=bridge comment=defconf ingress-filtering=no interface=wlan5
add bridge=bridge ingress-filtering=no interface=ether1
add bridge=bridge ingress-filtering=no interface=wlan3 learn=yes
/interface list member
add comment=defconf interface=bridge list=LAN
add comment=defconf disabled=yes interface=ether1 list=WAN
add interface=ether1 list=LAN