The posts that seem to be affected are clean posts. Any posts that have a url, quote or spoiler in them seem to be unaffected.
Please give the admin team some time to work on the problem. If you come across any other information relating to the problem, like types of posts that aren't affected etc., then please post them in here. Just remember to include a quote/spoiler in your post to ensure the post is visible. And please try to keep the "I can't see posts" posts to a minimum! lol Thanks everyone.