This show the sidebar issue in EventBox 1.0 (r568), the Mac Desktop Twitter client, where the sidebar becomes locked following a drag-and-drop of a search event into a folder. The menus still work. Following a quit and relaunch, the last added search definition is no longer there, but can be re-added and dragged into the folder without problem.

Note: there is not talking in this screencast, just the sound of clicking.

EventBox - Sidebar Issue when Dragging Searches into Folder from Neil Boyd on Vimeo.