Defect: Github team and codeowners file doesn't follow same validation

I have a team in github with the + character in it (millennnium+). The team has no issue in github, but the codeowners file stops working as soon as I assign that team to owning something. Once I removed that + from the team in github and the row in the codeowners file, it started working again.

To prevent future stalls Github I would like to request the codeowners file to be compliant with the special characters, or prevent entering special characters within the name of Github Teams. Thank you in advance!