Sidebar in Jira stopped working today for all addons having defined a sub-menu structure. Clicking on the main link will open the vendor page instead of opening the sub-menu defined in the descriptor. Examples of broken plugins include Tempo, Clockwork and others. We’re getting reports from vendors suggesting that’s a global issue.
^ click on the screenshots to view them, at the bottom you can see that if you hover on the link the vendor page is used.