postMessage in service workers is hopping from main thread to service worker thread to dispatch events.
Ditto for fetch event.
Some other events though are hopping from main thread to service worker thread, then posting a task to dispatch events.
This may create ordering problems
Created attachment 367046 [details]
Created attachment 367126 [details]
Comment on attachment 367126 [details]
Clearing flags on attachment: 367126
Committed r244160: <https://trac.webkit.org/changeset/244160>
All reviewed patches have been landed. Closing bug.
*** Bug 190828 has been marked as a duplicate of this bug. ***