DNS not working after reboot

I migrated TurrisOS from version 3 to version 5. Now when the router reboots, DNS doesn’t work until I restart service dnsmasq.
I compared the content of /var/etc/dnsmasq.conf.cfg01411c before and after restarting the service and the only difference is this line:

no-dhcp-interface=br-lan

Is this a bug or bad configuration ?

For now I solved it by adding scripts to /etc/hotplug.d that restart dnsmasq when br-lan is added.

… and you chose to switch to dnsmasq as the DNS provider? (The default supported case for Omnia and MOX is kresd daemon.)

I didn’t make any changes in configuration after migration (at least nothing related do DNS).

To be clear - I’m not using Omnia as a router or DNS server, I have another router for that. I bridged all ethernet ports and I use Omnia as a “normal” server in the network.
I don’t remember how it was configured and what changes I made years ago - it worked until the migration.