RaspPi 3 A+ can not connect to OpenWrt Wifi

Hello,
it may not be a OpenWRT Problem but, maybe some other here had the same issue and know whats happend.

I try to connect my Raspberry Pi 3 A+ ( it only has wifi + bluetooth) to my openwrt device.
It works as long as I not enable "802.11w Management Frame Protection"
As soon as i enable mfp i can no longer connect to the wifi, and I not know what is the problem.

Whats in the logs:

hostapd: wlan1: STA b8:27:eb:64:44:bf IEEE 802.11: authenticated
hostapd: wlan1: STA b8:27:eb:64:44:bf IEEE 802.11: associated (aid 3)
hostapd: wlan1: AP-STA-POSSIBLE-PSK-MISMATCH b8:27:eb:64:44:bf
hostapd: wlan1: AP-STA-POSSIBLE-PSK-MISMATCH b8:27:eb:64:44:bf
hostapd: wlan1: AP-STA-POSSIBLE-PSK-MISMATCH b8:27:eb:64:44:bf
hostapd: wlan1: AP-STA-POSSIBLE-PSK-MISMATCH b8:27:eb:64:44:bf
hostapd: wlan1: STA b8:27:eb:64:44:bf IEEE 802.11: deauthenticated due to local deauth request

This mismatch i only get if fpm is optinal or required

whats my wpa_supplicant

network={
        ssid="MyWifi
        psk=*********
}

whats my openwrt wifi config

config wifi-device 'radio1'
        option type 'mac80211'
        option channel '11'
        option hwmode '11g'
        option path 'soc/1b700000.pci/pci0001:00/0001:00:00.0/0001:01:00.0'
        option htmode 'HT20'
        option cell_density '0'

config wifi-iface 'default_radio1'
        option device 'radio1'
        option mode 'ap'
        option network 'W2G'
        option ssid 'MyWifi'
        option disassoc_low_ack '0'
        option encryption 'sae-mixed'
        option key '******'
        option isolate '1'
        option wpa_disable_eapol_key_retries '1'

it allready works with and old wifi module on a raspberry pi 1 and other devices, without any problem.

802.11w support is avalible on chip:
~ $> iw phy phy0 info | grep 00-0f-ac:6
* CMAC (00-0f-ac:6)

Anyone has an idea whats wrong or missing here?

brcmfmac having problems with MFP is a known issue, not that this answer would help you much (but it's not just you).

At least I don't feel so stupid anymore and it may help finding a solution, so thank you.