Yep, I think this code https://github.com/mattermost/mattermost-server/blob/master/app/post.go#L182-L195
Should also be here https://github.com/mattermost/mattermost-server/blob/07fd7aeeb8eb2b198b01b713a4ab57f6352faef2/app/post.go#L404
I haven’t worked much with go so that may not be the real fix.