Strange output in mmonit, parsing non-standard characters

How to reproduce: Try create file with special characters. For example:

cat >> /root/testfile
Put some text, and press CTRL + H or CTRL + J, etc...
Press ENTER and after that CTRL + D

Add new program check Example:

check program test-alert with path "/root/test-alert.sh"
  if status > 0 then alert

Now print file and redirect output too error stream inside script used by monit. Example:

#!/bin/bash
cat /root/testfile 2>&1
exit 1

Now look at dashboard: Example:

I guess special characters should be removed before Monit send it to M/Monit. Or before M/Monit serve it in REST API.

Quick fix inside script:

cat /root/testfile | tr -cd '\11\12\15\40-\176' 2>&1

Confirmet in M/Monit 3.4, Monit 5.11 (test environment) and M/Monit 3.3, Monit 5.10 (production environment).

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