1 minute ago, WelshDdraig said:
You are right, I do use Grammarly - I must have missed that when going through the extensions. My mistake on that part.
I'll disable it on the forums and see if that helps from now on.
Since you said it like that - I assume its an issue, but for my curiosity sake - do you happen to know why it's an issue? Seems pretty random to me.
I believe it's because grammarly adds stuff to the editor to display the number of errors in the text, then doesn't remove them correctly when the post is submitted. The forum then sanitises the content that is submitted, which removes some of the formatting that makes it look OK, causing it to break stuff. It only appears if there's a grammarly-detected error in a quote or spoiler contents.
In the next forum update (towards the end of this month), grammarly will be disabled in editors for everyone to prevent breakage, but the issue really lies on their end.