If you have code sharing on, I would use that and see if the file is actually changed. If it’s changed, and you’re still not seeing them reflected in your playthrough, it’s likely a cookie is causing the issue.
If you had visited cogdemos before a couple of weeks ago, there is a persistent cookie that was saved that causes all kinds of problems. Deleting it (and all cogdemos cookies) and your cache for the site should fix it. You only need to do this once, not every time you visit the site.