Board Thread:General Discussion/@comment-4260948-20200717002214/@comment-5811199-20200721023158

Actually, looking at it now, it looks like it was only for portable infoboxes, and now the 'Show preview' link doesn't show up for portable infoboxes. Previews show up correctly on all other templates, so it shouldn't affect HarryPotterRules1 and their wikitext template.