This page registers a service worker under the domain

The mere presence of the service worker may confuse the HTTP cache key in Chrome and other Chromium browsers, starting v90.

The content in the following IFrame is dynamically generated. The IFrame border is set to blue   for clearer illustration.

Now observe the following:
  1. The first time the image inside the iframe is loaded, right click on the image and save to disk.
  2. Open the downloaded image. The timestamp should be a few seconds "into the future".
  3. Refresh this page, download the image again. The clock should "freeze" to the previous image.
Affected Browsers: Unaffected Browsers: Read more about this cache partitioning bug