Hello,

I am not aware if this is supposed to work.

Please go to the calendar, go to devtools and click application to check if there is a service worker. A service worker is a piece of javascript that continues to run so that you can receive notifications.

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You can see all registered service workers on these pages:

• about:serviceworkers
• about:debugging#workers

You can check WebSockets via this page:

• about:networking#websockets

See also serviceworker.txt in the profile folder.

• https://developer.mozilla.org/en-US/docs/Tools/about:debugging

Service Workers do not work if you let the cookies expire when you close Firefox (Delete cookies and site data when Firefox is closed). In this case you need to create a cookie allow exception to make Service Workers work.

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