problem with bbcode on community forum
https://musescore.com/groups/piano/discuss/5063113?page=1#comment-52093…
as you can see I can post bbcode tags that are not allowed. I reported this through openbugbounty a few days ago, but i can send a message on how to do it to the support team through this site if you didn't receive the email, so you can fix it.
Comments
We don't support the commercial score sharing platform here on musescore.org.
Post your issue to support@musescore.com or into https://musescore.com/groups/improving-musescore-com/
At some point in the past, images were (at least partially) supported in their discussion groups so it could just as well be a remnant of that.
See https://musescore.org/en/faq#faq-20657 and the linked page on where to go with support requests.