Notification behavior from web-browser no longer allows switching tabs

[brs17]

Distribution (run cat /etc/os-release):
Pop!_OS 19.10

Related Application and/or Package Version (run apt policy $PACKAGE NAME):
firefox, chromium-browser

Issue/Bug Description:
Notifications do not lead to the appropriate tab in a web browser.

Steps to reproduce (if you know):

1. Launch either firefox or chromium-browser (others may work as well but have not been tested).
2. Open a window where a notification will be received.
3. Open a second tab (and stay on this tab).
4. Receive notification.
5. Select notification.
6. See that selecting notification does nothing (Notification does not close).

Expected behavior:
Selecting the notification should close the notification and switch tabs to the tab from where the notification arose.

Other Notes:
The expected functionality described works in 19.04.

[RenouxMarais]

Also affected

[StephenTurley]

I think this is related: brave/brave-browser#6701