See: https://github.com/whatwg/html/pull/322#issuecomment-204278675 Spec says: "When the request’s url is local, if the service worker client’s responsible browsing context is a nested browsing context or the service worker client is a worker client, the service worker client inherits the service worker registration from its parent browsing context’s environment or one of the worker’s Documents' environment, respectively, if it exists."
Note, this is a compat issue affecting people in the wild. See the chromium ticket for some examples: https://bugs.chromium.org/p/chromium/issues/detail?id=439697
No longer blocks: ServiceWorkers-compat
Status: NEW → RESOLVED
Last Resolved: a year ago
Resolution: --- → DUPLICATE
Duplicate of bug: 1293277
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