[Samba] unexpected NT_STATUS_OBJECT_NAME_INV

[flot sky]

Greetings.

After creating a new installation with version '4.18.2-2' and copy
configuration from the previous server '4.17.5-1'
I am getting NT_STATUS_OBJECT_NAME_INVALID when trying to make files with
':' within their name.

Also existing files with ':' in names start to mangle, until i set 'mangled
names = no'.

I do not have any windows clients.
Are there any parameters that I am missing to restore version '4.17.5-1'
behavior?

Problem:
$ smbclient \\\\192.168.148.192\\nanopct4
Password for [WORKGROUP\flotsky]:
Try "help" to get a list of possible commands.
smb: \> cd tst
smb: \tst\> mkdir 123:
NT_STATUS_OBJECT_NAME_INVALID making remote directory \tst\123:

Environment:
[root at nanopct4 ~]# uname -a
Linux nanopct4 6.3.8-1-MANJARO-ARM #1 SMP PREEMPT Fri Jun 16 16:17:17 UTC
2023 aarch64 GNU/Linux
[root at nanopct4 ~]# pacman -Qs samba
local/samba 4.18.2-2
    SMB Fileserver and AD Domain server
Filesystem under samba shares is on ext4 and don't have problems creating
files with ':'

Current server configuration:
[global]
   workgroup = WORKGROUP
   dns proxy = no
   log file = /var/log/samba/%m.log
   max log size = 1000
   client min protocol = SMB2
   server role = standalone server
   passdb backend = tdbsam
   obey pam restrictions = yes
   unix password sync = yes
   passwd program = /usr/bin/passwd %u
   passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password* %n\n
*passwd:*all*authentication*tokens*updated*successfully*
   pam password change = yes
   map to guest = Bad Password
   usershare allow guests = yes
   name resolve order = lmhosts bcast host wins
   security = user
   guest account = nobody
   load printers = no
   disable spoolss = yes
   show add printer wizard = no

[nanopct4]
  comment = nanopct4
  browseable = no
  path = /mnt
  guest ok = no
  valid users = flotsky
  force user = flotsky
  writable = yes
  create mask = 0755
  directory mask = 0755
  mangled names = no