Microsoft Edge marks Cloudflare's Worker edit/preview page as unsafe

When editing a CF Worker online, I've noticed the Microsoft Edge (latest stable version) marks the DevTools part as unsafe. I've tested it with a few Workers on my account and all of them have the same issue. I'm quite unsure what the issue is, I've clicked report as safe and filled the feedback form to Microsoft. That did not change much, sadly. Clicking show unsafe content doesn't really help the issue, as the DevTools console is still unavailable even after that.