On EX4400 platforms, some "factory default" header like below will show up in output of "show configuration".

{master:0}
root@jtac-EX4400-48F-r009> show configuration 
Apr 23 21:04:06
## Last commit: 2023-04-23 21:03:03 PDT by root
version 22.3R1-S2.3;
groups {
    default {
        system {
        
<Output truncated>

}
apply-groups [ default sw-ham-core-vc ];
#
# $Id:$
#
# Copyright (c) 2020, Juniper Networks, Inc.	<<<<<<<<<<<<<<<<
# All rights reserved.
#
# Filename: ex4400-48f-factory.conf
# Platform: EX4400-48F
# Description: Factory default config for Junos.
#
#
system {
---(more 12%)---[abort]

On EX4400 platforms, some "factory default" header like below will show up in output of "show configuration".

{master:0}
root@jtac-EX4400-48F-r009> show configuration 
Apr 23 21:04:06
## Last commit: 2023-04-23 21:03:03 PDT by root
version 22.3R1-S2.3;
groups {
    default {
        system {
        
<Output truncated>

}
apply-groups [ default sw-ham-core-vc ];
#
# $Id:$
#
# Copyright (c) 2020, Juniper Networks, Inc.    <<<<<<<<<<<<<<<<
# All rights reserved.
#
# Filename: ex4400-48f-factory.conf
# Platform: EX4400-48F
# Description: Factory default config for Junos.
#
#
system {
---(more 12%)---[abort]

These messages are informational which are inherited from the platform specific factory-default config file which gets merged with common factory default config.

For example:

root@jtac-EX4400-48F-r009:RE:0% more /etc/config/ex4400-48p-factory.conf
#
# $Id:$
#
# Copyright (c) 2020, Juniper Networks, Inc.
# All rights reserved.
#
# Filename: ex4400-48p-factory.conf
# Platform: EX4400-48P
# Description: Factory default config for Junos.
#
#

system {
    auto-snapshot;
<Output truncated>
 

The header should have been omitted in the output via double hash tag “##” but they are now with single hash tag “#”.

**************************

Fix of this issue is contained in one of Junos versions below so upgrading to one of them resolves it.