The IEDevToolbar is a great help for web-based development with Internet Explorer. I've been using it since it was in beta and while it generally does the job, the bugs have been ever-present in different forms.
One of the latest things I've noticed is how the toolbar seems to stop working (generally after refreshing a page that's changed at the server). The menu options are greyed out and clicking with the pointer refuses to select any page elements. Closing the toolbar and re-opening it again fixes the problem but there is a better way.
For some reason, the toolbar doesn't always automatically refresh itself. As a result the DOM tree represented in the toolbar doesn't match the DOM tree in the browser. Closing and re-opening the toolbar synchronises the toolbar with the page but this can also be accomplished but hitting the IEDevToolbar's Refresh button (one of several icons that don't make a lot of sense at first glance). The menus function once again and page elements are clickable. Why this doesn't always happen automatically is beyond me.