Edge swipe gesture for opening Notification Center on macOS stopped working Recently the edge swipe gesture for opening Notification Center stopped working on my MacBook Pro. It happened around the same time I upgraded to Catalina, but not sure if it's related. I also confirmed the setting is still enabled (screenshot below). It works fine if I click the button on the top right. Any ideas on how to resolve? Thanks.
I managed to solve this by quitting Notification Centre using Activity Monitor.

Instructions here : https://osxdaily.com/2012/09/18/how-to-restart-notification-center-in-os-x/