Something between 2021-11-30 and 2021-12-10 broke ability to access other computers in the network via samba

The latest filesystem package update broke Samba in Thunar “Browse Networks” The other computers appear, but clicking on a computer and nothing happens. The issue is with nsswitch.conf in the new version. When I replaced nsswitch.conf with the version from 05.31, I was able to access the samba shares. I do not have a clue which of the many changes might have caused the issue.
Here are the nsswitch.conf files for comparison purposes:

05.31 Stable
# Name Service Switch configuration file.
# See nsswitch.conf(5) for details.

passwd: files mymachines systemd
group: files [SUCCESS=merge] mymachines systemd
shadow: files

publickey: files

hosts: files mymachines mdns4_minimal [NOTFOUND=return] resolve [!UNAVAIL=return] dns mdns4 myhostname
networks: files

protocols: files
services: files
ethers: files
rpc: files

netgroup: files
12.07 Unstable
# Name Service Switch configuration file.
# See nsswitch.conf(5) for details.

passwd: files systemd
group: files [SUCCESS=merge] systemd
shadow: files systemd
gshadow: files systemd

publickey: files

hosts: mymachines resolve [!UNAVAIL=return] files myhostname dns
networks: files

protocols: files
services: files
ethers: files
rpc: files

netgroup: files
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