diff --git a/tests/runner-e2e/reliability-testops-registration.mjs b/tests/runner-e2e/reliability-testops-registration.mjs
index c9da1096cec..42d1c9706a2 100644
--- a/tests/runner-e2e/reliability-testops-registration.mjs
+++ b/tests/runner-e2e/reliability-testops-registration.mjs
@@ -94,8 +94,7 @@ export async function inspectReliability(api) {
   if (candidates.length !== 1 || !positive(candidates[0].job.id)) fail('standing_job');
   const job = await api(`/api/job/${candidates[0].job.id}`);
   if (job?.id !== candidates[0].job.id || job.type !== 'github' || !workflowUrls.has(job.url)) fail('standing_job');
-  const assignments = plan ? await api(`/api/testplan/${plan.id}/job`) : [];
-  if (!Array.isArray(assignments)) fail('plan_job');
+  const assignments = plan ? jobAssignments(await api(`/api/testplan/${plan.id}/job`)) : [];
   return { caseIds: Object.fromEntries(found), plan, jobId: job.id,
     standingParameters: Array.isArray(candidates[0].job.parameters) ? candidates[0].job.parameters : [], assignments };
 }
@@ -134,8 +133,8 @@ export async function registerReliability(api) {
     plan = await api(`/api/testplan/${plan.id}`);
   }
   assertPlan(plan, ids);
-  let assignments = await api(`/api/testplan/${plan.id}/job`);
-  if (!Array.isArray(assignments) || assignments.length > 1 || assignments.some(row => row?.job?.id !== before.jobId)) fail('plan_job_conflict');
+  let assignments = jobAssignments(await api(`/api/testplan/${plan.id}/job`));
+  if (assignments.length > 1 || assignments.some(row => row?.job?.id !== before.jobId)) fail('plan_job_conflict');
   if (!assignments.length) {
     await api(`/api/testplan/${plan.id}/assign`, 'POST', { jobId: before.jobId, selection: { inverted: false, manual: false, leafsInclude: ids } });
     created.assignment = true;
@@ -145,13 +144,21 @@ export async function registerReliability(api) {
     await api(`/api/testplan/${plan.id}/jobparameter`, 'POST', { jobId: before.jobId, parameters: before.standingParameters });
     created.parameters = true;
   }
-  assignments = await api(`/api/testplan/${plan.id}/job`);
-  if (!Array.isArray(assignments) || assignments.length !== 1 || assignments[0]?.job?.id !== before.jobId
+  assignments = jobAssignments(await api(`/api/testplan/${plan.id}/job`));
+  if (assignments.length !== 1 || assignments[0]?.job?.id !== before.jobId
       || assignments[0].testCasesCount !== ids.length
       || (before.standingParameters.length && !same(assignments[0].job.parameters ?? [], before.standingParameters))) fail('plan_job');
   return { caseIds, plan, jobId: before.jobId, created };
 }
 
+// TestOps lists a plan's cases that no job covers as a job-less row, e.g.
+// `[{ testCasesCount: 7 }]` for a freshly created plan. That row is not a job
+// assignment; only rows naming a job are.
+function jobAssignments(rows) {
+  if (!Array.isArray(rows)) fail('plan_job');
+  return rows.filter(row => row?.job != null);
+}
+
 export function registrationReceipt(operation, state, env) {
   const caseIds = Object.fromEntries(reliabilityDefinitions.filter(row => state.caseIds[row.name]).map(row => [row.name, state.caseIds[row.name]]));
   const complete = Object.keys(caseIds).length === reliabilityDefinitions.length && positive(state.plan?.id)
diff --git a/tests/runner-e2e/reliability-testops.test.mjs b/tests/runner-e2e/reliability-testops.test.mjs
index c10727bd54c..4cda542b8c3 100644
--- a/tests/runner-e2e/reliability-testops.test.mjs
+++ b/tests/runner-e2e/reliability-testops.test.mjs
@@ -196,6 +196,8 @@ function fakeTestOps({ existing = [], plan = null, assignments = [], standing =
     if (method === 'GET' && url.pathname === '/api/testplan') return { content: state.plan ? [{ id: state.plan.id, name: state.plan.name }] : [], totalPages: 1 };
     if (method === 'POST' && url.pathname === '/api/testplan') {
       state.plan = { id: 77, projectId: 1, name: body.name, treeSelection: body.treeSelection, testCasesCount: body.treeSelection.leafsInclude.length };
+      // Live TestOps lists a new plan's uncovered cases as one job-less row.
+      state.assignments = [{ testCasesCount: body.treeSelection.leafsInclude.length }];
       return { id: 77 };
     }
     if (method === 'GET' && url.pathname === '/api/testplan/77') return state.plan;
@@ -293,6 +295,20 @@ test('registration refuses a standing plan without exactly one trusted job or a
   await assert.rejects(registerReliability(api), /plan_job_conflict/);
 });
 
+test('a plan TestOps reports only as a job-less row is unassigned, so registration assigns the standing job', async () => {
+  const { api, state } = fakeTestOps();
+  await registerReliability(api);
+  // Reproduces staging plan 135: created, then the run stopped before assignment.
+  state.assignments = [{ testCasesCount: 7 }];
+  const inspected = await inspectReliability(api);
+  assert.deepEqual(inspected.assignments, []);
+  assert.equal(registrationReceipt('inspect', inspected, env).complete, false);
+  const repaired = await registerReliability(api);
+  assert.equal(repaired.created.assignment, true);
+  assert.deepEqual(state.assignments.map(row => row.job?.id), [50]);
+  assert.equal(registrationReceipt('register', repaired, { GITHUB_RUN_ID: '1', GITHUB_SHA: workflowSha }).complete, true);
+});
+
 test('the workflows expose the reliability plan without new provider or reporting authority', async () => {
   const full = parse(await readFile(new URL('../../.github/workflows/runner-full-stack-e2e.yml', import.meta.url), 'utf8'));
   assert.deepEqual(full.on.workflow_dispatch.inputs.testops_plan.options, ['product-regression', 'reliability']);