samba4: cannot connect due to permission denied on share_info.tdb

Maintainer: @Gingernut1978
Environment: ARMv5TE, ZyXEL NSA325-Feroceon 88FR131, OpenWrt SNAPSHOT r21997-b5193291bd

Description:
I just installed a fresh snapshot of OpenWrt and I run into a new problem while trying to connect to my smb shares.
The connection is refused and I found this in /var/log/log.rpcd_classic

[2023/02/06 00:26:56,  0] ../../source3/rpc_server/rpc_worker.c:1105(rpc_worker_main)
  rpcd_classic version 4.17.2 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2022
[2023/02/06 00:26:57,  0] ../../source3/lib/sharesec.c:161(share_info_db_init)
  Failed to open share info database /var/lib/samba/share_info.tdb (Permission denied)
[2023/02/06 00:26:57,  0] ../../source3/lib/sharesec.c:161(share_info_db_init)
  Failed to open share info database /var/lib/samba/share_info.tdb (Permission denied)
[2023/02/06 00:26:57,  0] ../../source3/lib/sharesec.c:161(share_info_db_init)
  Failed to open share info database /var/lib/samba/share_info.tdb (Permission denied)
[2023/02/06 00:26:57,  0] ../../source3/lib/sharesec.c:161(share_info_db_init)
  Failed to open share info database /var/lib/samba/share_info.tdb (Permission denied)
[2023/02/06 00:26:57,  0] ../../source3/lib/sharesec.c:161(share_info_db_init)
  Failed to open share info database /var/lib/samba/share_info.tdb (Permission denied)

The permissions on /var/lib/samba/share_info.tdb are set to rw for root only, if I add rw for other users and restart the service I can connect and it works as usual.
If I restart the system the permissions are back to rw for root only, I guess the files in /var/lib/samba/ are re-created at boot.
I'm on samba4-server v4.17.2-2

This was not happening on samba4-server v4.14.12-1, OpenWrt SNAPSHOT r18717-0e32c6baf3.
I preserved the old configuration. I backed up and copied to the new installation the following files:

/etc/config/samba4
/etc/samba/secrets.tdb
/etc/samba/smb.conf.template
/etc/samba/smbpasswd
/etc/avahi/services/smb.service

Start by comparing how samba4-server v4.17.2-2 creates or opens /var/lib/samba/share_info.tdb after boot against v4.14.12-1. Check the permissions and startup behavior around that database, using the reported rpcd_classic error and the listed Samba configuration files as context; done means shares connect without manually changing permissions and the permissions persist after restart.