version 3.9.1 shows artifacts in icingaweb2 preview

[LFrank2021]

What happened:
The preview image in Icingaweb2 shows artifact from top left to bottom right.
I tested version 3.4.2, 3.7.2, 3.8.4 and 3.9.0 all those show no artifacts.

What you expected to happen:
Not seeing the artifacts

How to reproduce it (as minimally and precisely as possible):
It seems to be a mix between icinga2 and grafana.
So most likely you need an Icinga2 environment.

Anything else we need to know?:

Environment:

• Grafana Image Renderer version: 3.9.1

• Grafana version: Enterprise 10.3.3-1

• Installed plugin or remote renderer service: plugin

• OS Grafana Image Renderer is installed on: openSUSE 15.5

• User OS & Browser: Windows 10 & Firefox 121.0

• Others:
  Icinga Web 2 Version 2.12.1
  Git commit cd2daeb2cb8537c633d343a29eb76c54cd2ebbf2
  PHP Version 8.1.24
  Git commit date 2023-11-15
  Loaded Libraries
  icinga/icinga-php-library 0.13.1
  icinga/icinga-php-thirdparty 0.12.1
  Loaded Modules
  director 1.11.0
  doc 2.12.1
  grafana 2.0.3
  icingadb 1.1.1
  incubator 0.21.0
  monitoring 2.12.1

  icinga2 --version
  icinga2 - The Icinga 2 network monitoring daemon (version: r2.14.2-1)

  System information:
  Platform: openSUSE Leap
  Platform version: 15.5
  Kernel: Linux
  Kernel version: 5.14.21-150500.55.44-default
  Architecture: x86_64

  Build information:
  Compiler: GNU 7.5.0
  Build host: unknown
  OpenSSL version: OpenSSL 1.1.1l-fips 24 Aug 2021 SUSE release 150500.17.22.1

  Application information:

  General paths:
  Config directory: /etc/icinga2
  Data directory: /var/lib/icinga2
  Log directory: /var/log/icinga2
  Cache directory: /var/cache/icinga2
  Spool directory: /var/spool/icinga2
  Run directory: /run/icinga2

  Old paths (deprecated):
  Installation root: /usr
  Sysconf directory: /etc
  Run directory (base): /run
  Local state directory: /var

  Internal paths:
  Package data directory: /usr/share/icinga2
  State path: /var/lib/icinga2/icinga2.state
  Modified attributes path: /var/lib/icinga2/modified-attributes.conf
  Objects path: /var/cache/icinga2/icinga2.debug
  Vars path: /var/cache/icinga2/icinga2.vars
  PID path: /run/icinga2/icinga2.pid

[LFrank2021]

3.10.0 shows the same artifact.

[LFrank2021]

I just tried 3.11.1 and it seems to not show the bug/artifacts.
Seems whatever someone changed: problem solved.