fix mentions in replies don't work

[bagvand]

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

Fix #4425

[bmarty]

Hi @bagvand , thanks for the PR. Can you provide a Sign-Off please? Thanks!

[bagvand]

Hi @bmarty , You're Welcome, if you means Signed-off-by then i did it.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}