selfComposer took a KVHistory error for 'not placed': at any restart a timeout or a bus not ready flipped a self-composing node to the controller's compositions for a whole run. selfcompose.Placed chooses only on a read that succeeds (a missing placement state is one), and tries again otherwise, said once. The shadow's answer to a head deleting the placement reads the controller's composition at each want in the node's bucket and compares it with what runs; a want with none refuses, without returning.