Turn some text into a link rather than just pasting the link in. When just adding the link: When calling it something: Cats!
This was a sharing link to a google doc which has succeeded in the past. Now it is being 'munged' and re-mogrified, and it becomes a giant grey box with a message that says not 'accessible'. Grrr
As text: As 'Cats!' Cats! (Just write 'Cats!', select it, click the link button, paste the link. Or write [url="your_google_docs_url_here"]Cats![/url].)
Ummm, @Komposten, correct me if I'm wrong, but I don't think we allow those sorts of external links as a matter of policy though, do we?
This just comes up occasionally, not everywhere. URL!! That was it! I actually searched for this, and still couldn't find it! Lucky I was a dumbass before!