Bug in Export Metadata

File Export Audio (It’s set to mp3)
Export To Computer
Edit Metadata

If I enter for example this in to the comments section
(A time stamp and URL)

01:16 https://www.youtube.com/watch?v=yzJ2VyYkmaA

It gets duplicated

This was a known logged issue:

But Mused closed thst saying: " Improving metadata handling is not planned for the moment, closing for now. There may be a bigger metadata release eventually…"

And there are many other issues with metadata handling in Audacity - see this super bog: