It is written here that the push notifications will work even if the browser is closed, but I tested it and it is not the case. I receive push-notifications only if the browser is open (doesnt matter if the particular webpage is open or not).
I tested this on chrome for Desktop & chrome for Android (after updating to latest version).
my question is :- For push notifications to work should the browser be open?
Note:- I used this for testing.
According to Can I Use, Chrome and Firefox desktop browsers require the browser to be running for receiving push notifications; mobile browsers typically don't.