When I start the computer, Notifications has 1 job running, which never finishes. When I click on the icon, it says "in progress..." but no other information. I posted a screenshot here: https://www.dropbox.com/s/yz3690v81fokp ... n.jpg?dl=0
How should I go about debugging this and how to find out which process is holding up Notifications?

This issue seems to have resolved itself in a recent update.