Bug 69424 TVT3.0: Multiple Mnemonics in Tasks -> Filters
From the main Workbench view, click the Task menu (drop down arrow) and select Filters. There are duplicated mnemonics for (D). See the attached screenshot.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/DialogTaskFilter.java
statusGroup.setDone(filter.getDone());
        super.updateUIFromFilter();
    }
    /* (non-Javadoc)
     * @see org.eclipse.ui.views.markerview.FiltersDialog#updateEnabledState()
     */
    protected void updateEnabledState() {
        super.updateEnabledState();
        descriptionGroup.updateEnablement();
        priorityGroup.updateEnablement();
        statusGroup.updateEnablement();
    }
    /* (non-Javadoc)
     * @see org.eclipse.ui.views.markerview.FiltersDialog#resetPressed()
     */
    protected void resetPressed() {
        descriptionGroup.setContains(TaskFilter.DEFAULT_CONTAINS);
        descriptionGroup.setDescription(TaskFilter.DEFAULT_DESCRIPTION);
        priorityGroup.setEnabled(TaskFilter.DEFAULT_SELECT_BY_PRIORITY);
        priorityGroup
                .setHighSelected((TaskFilter.DEFAULT_PRIORITY & TaskFilter.PRIORITY_HIGH) > 0);
        priorityGroup
                .setNormalSelected((TaskFilter.DEFAULT_PRIORITY & TaskFilter.PRIORITY_NORMAL) > 0);
        priorityGroup
                .setLowSelected((TaskFilter.DEFAULT_PRIORITY & TaskFilter.PRIORITY_NORMAL) > 0);
        statusGroup.setEnabled(TaskFilter.DEFAULT_SELECT_BY_DONE);
        statusGroup.setDone(TaskFilter.DEFAULT_DONE);
        super.resetPressed();
    }
}