John_Yossarian The forum has a feature to merge multiple posts within the same discussion all done within a few minutes of each other. The bit below was added in a second post, done within a few minutes
So people adding afterthoughts all get it added to the original post. Unfortunately, the logic causes an error to appear, because the post is no longer there in the screen you’re looking at. You have to discard your post, because the editor is editing a post that no longer exists. When you refresh, it’s all there, added in the original post.
Who ever wrote the extension, didn’t consider the above as a potential issue and should have dealt with the merging, after. the post was written and submitted.