Regular networking bridge stops working after setting up Proxmox SDN

I have a pve 8 standalone node that came with the regular vmbr0 and vmbr1 bridges. When creating VMs and attaching them to these bridges everything works perfectly. I decided to use Proxmox SDN to have better native control over my subnet configuration.
For this, I have done as the docs said: disable the global dnsmasq and started the dnsmasq@zone unit. This works perfectly for the SDN subnets with DHCP and DNS functioning correctly.
The problem is that VMs and CTs attached to the regular...

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