DFS does not work after upgrading to latest snapshot

Hi all,

I have an issue, i just upgraded from OpenWrt SNAPSHOT r14749-472a06f707 to
OpenWrt SNAPSHOT r15469-425e392466 on one of my R7800s, but now 160MHz does not work anymore. Only 80MHz. Looking at the log this is because DFS fails and hence no 160MHz channels are allowed.

Any idea how to fix this? Or is actually better to install the latest stable? Anything vital missing in the stable?

Thanks,

Ramon

Mon Jan 11 17:15:33 2021 daemon.notice hostapd: wlan0: interface state UNINITIALIZED->COUNTRY_UPDATE
Mon Jan 11 17:15:33 2021 kern.info kernel: [69397.033696] br-lan: port 2(wlan0) entered disabled state
Mon Jan 11 17:15:33 2021 daemon.notice hostapd: ACS: Automatic channel selection started, this may take a bit
Mon Jan 11 17:15:33 2021 daemon.notice hostapd: wlan0: interface state COUNTRY_UPDATE->ACS
Mon Jan 11 17:15:33 2021 daemon.notice hostapd: wlan0: ACS-STARTED
Mon Jan 11 17:15:54 2021 daemon.notice hostapd: wlan0: ACS-COMPLETED freq=5500 channel=100
Mon Jan 11 17:15:54 2021 daemon.notice hostapd: wlan0: interface state ACS->HT_SCAN
Mon Jan 11 17:15:54 2021 daemon.notice hostapd: wlan0: interface state HT_SCAN->DFS
Mon Jan 11 17:15:54 2021 daemon.notice hostapd: wlan0: DFS-CAC-START freq=5500 chan=100 sec_chan=1, width=2, seg0=114, seg1=0, cac_time=60s
Mon Jan 11 17:15:54 2021 daemon.err hostapd: DFS start_dfs_cac() failed, -1
Mon Jan 11 17:15:54 2021 daemon.err hostapd: Interface initialization failed
Mon Jan 11 17:15:54 2021 daemon.notice hostapd: wlan0: interface state DFS->DISABLED
Mon Jan 11 17:15:54 2021 daemon.notice hostapd: wlan0: AP-DISABLED