The live try (build-1792488565282382172) left a stand-in vault box in f35 and yvbpsm: the file was matched by the manifest's path, which the composition fills in for the machine. The seal now matches by the resource's id alone and names any stand-in that is left. The two served-fact tests set the setting before assigning (an assignment resolves the mesh), and the second clears it after.