Thank you very much. Yes, removing the file works after the machine is rebooted. It was not enough to stop and start apparmor with the systemd tools. I am not in a hurry as I understand the issue and can avoid it. It reminds me of changes in /etc/ImageMagick-7_Q16HDRI6/policy.xml I had to make in order to be able to convert some graphics fortmats to pdf. I appreciate the work on suspected security risk.