The selected items in the three sub views (Instances, Allocation stack, and Root path) are synchronized with each other. Whenever an instance is selected in the Instances table, the corresponding allocation call stack and root path is selected in the views to the right. This also occurs when multiple instances are selected, but only if all instances have a common allocation call stack or root path. If the selected instances do not have a common call stack or root path, then none is selected and the message "More than one call stack exists for the selected instances" or "More than one shortest root path exists for the selected instances" is shown.
If the allocation stacks or root paths are sorted by something else than Live instances and the Hide item with zero sort value option is selected, then it is possible that no matching call stack or root path can be found. In this case the message "Allocation stack is hidden for the selected instance(s)" or "Shortest root path is hidden for the selected instance(s)" is shown. To show the corresponding stack or item, either sort by Live instances, or clear the Hide item with zero sort value option.
The synchronization also goes the other direction. Whenever an allocation call stack or root path is selected, the corresponding live instances (if any) will also be selected in the Instances list.