Tested on the demozk7 server - I open a session, close the tab, the browser popup warning me appears and I choose to abandon the session.
If you then open a tab and go to that server, you can see the session was not closed.
This was implemented with ticket https://idempiere.atlassian.net/browse/IDEMPIERE-984#icft=IDEMPIERE-984 but seems that is broken.
Tested on the demozk7 server - I open a session, close the tab, the browser popup warning me appears and I choose to abandon the session.
If you then open a tab and go to that server, you can see the session was not closed.
This was implemented with ticket https://idempiere.atlassian.net/browse/IDEMPIERE-984#icft=IDEMPIERE-984 but seems that is broken.