Community
Participate
Working Groups
In some cases, a task will have more information (e.g. a bug with a dependency). In that case, there is an arrow to open/close the additional information. This arrow in the UI (when the Task List view is set in the right-hand pane) sits right over the activation radio button for the bug task. It cannot be pressed and instead one must use right-click to activate/de-activate the task. I noticed the same thing when I filtered the task list for a particular term. It put the open arrow right over the activate/deactivate button.
See bug 210697 for more details. *** This bug has been marked as a duplicate of bug 210697 ***