URLs being dropped from Thunderbird-generated replies

To be make my previous question a bit more precise, is it a bug on Thunderbird’s part that it puts class="moz-txt-link-freetext into hyperlinks in emails that it sends? Is it a bug on Discourse’s part that the presence of such a tag causes the <a>...</a>-enclosed URL to be dropped from the body of the message and subsequent <br> tags to be ignored?

1 Like