Hi @spprod!
A teammate tested this with links in attachments on webhooks and wasn’t able to reproduce the issue (tried various malformations of the link, formatted as an attachment and formatted as just a post with a link, even tried changing server and client to French).
I know you already mentioned that you verified that the link structure looks correct, but would there be any way for you to post the html of the link or any other way to verify if the link is correctly structured?