Hello! Did the same. At first it worked. But after that, the IP address disappeared from my main interfaces.
And now when I build a new instance, it does not want to receive an IP address by dhcp.

enp2s0 UP
enp3s0 UP
br-enp3s0 UP 10.24.64.27/24 fe80::bfc:7cba:9742:838e/64
br-enp2s0 UP 192.168.50.68/24 fe80::accd:f15c:e206:1206/64