Need to prevent agent from changing ticket ownership

Infos:

  • Used Zammad version: 3.3.x
  • Used Zammad installation source: (source, package, …) source
  • Operating system: Centos7
  • Browser + version: FireFox 77.0.1 (64bit)

Expected behavior:

Actual behavior:

Steps to reproduce the behavior:

:man_shrugging:

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