Special Chars/Emoji in plain Text files

Thanks, then I will continue to search. May you are able to give me some deeper insights about that file?
What MimeType does it have? What is the configuration in Hugo for this file? Are you able to share a link to this file so I can inspect it?

My source looks like this:

/* NOTE */
	Built with ❤ ❤ ❤.

… so I’ve tried multiple versions of the same special char.

I use Atom: Poll 2021. Which code editors do you use when writing Hugo's files (markdown and templates)?

In UTF-8 Mode for this file.