I'm using autofs for years for mounting my NFS and my SMB/CIFS shares. For the
CIFS shares I use the following entry in /etc/auto.master:

/.smb   /etc/auto.smb

The credentials to be used live in /etc/creds/<hostname> and contains the
required entries for all users configured in /etc/samba/smb.conf

When I run the /etc/auto.smb script manually, I see the following:

# /etc/auto.smb melmac
-fstype=cifs,uid=$UID,gid=$GID,credentials=/etc/creds/melmac \
         "/tmp" "://melmac/tmp" \
         "/D" "://melmac/D" \
         "/Bilder" "://melmac/Bilder" \
         "/eBooks" "://melmac/eBooks" \
         "/BDs" "://melmac/BDs" \
         "/DVDs" "://melmac/DVDs" \
         "/Multimedia" "://melmac/Multimedia" \
         "/Backup" "://melmac/Backup" \
         "/manfred" "://melmac/manfred"

When I (user "manfred", uid=1000) change into the directory /.smb/melmac/D,
mount shows the following line for the auto-mounted file system:

//melmac/D on /.smb/melmac/D type cifs
(rw,relatime,vers=3.1.1,cache=strict,username=manfred,domain=WORKGROUP,uid=0,noforceuid,gid=0,noforcegid,addr=192.168.17.10,file_mode=0755,dir_mode=0755,soft,nounix,serverino,mapposix,rsize=4194304,wsize=4194304,bsize=1048576,echo_interval=60,actimeo=1)

Note the "uid=0" and "gid=0" here!

When I do the same on Leap 15.3, this line is shown:

//melmac/D on /.smb/melmac/D type cifs
(rw,relatime,vers=3.1.1,cache=strict,username=manfred,domain=WORKGROUP,uid=1000,noforceuid,gid=100,noforcegid,addr=192.168.17.10,file_mode=0755,dir_mode=0755,soft,nounix,serverino,mapposix,rsize=4194304,wsize=4194304,bsize=1048576,echo_interval=60,actimeo=1)

Notice the small but important difference? On Leap "uid=1000" and "gid=100" are
used to mount the fs, which enables me to actually write to that directory.

On Tumbleweed, all I see is "permission denied" when trying to write to the
file system! How can I re-enable the behaviour which existed for several years
now?