diff --git a/packages/shade-transfer/src/engine.ts b/packages/shade-transfer/src/engine.ts
index eb22074..6fb3f8a 100644
--- a/packages/shade-transfer/src/engine.ts
+++ b/packages/shade-transfer/src/engine.ts
@@ -451,7 +451,7 @@ export class TransferEngine {
       for (const q of queues.values()) q.abort(err);
       throw err;
     }
-    await Promise.all(workers);
+    await settleWorkers(workers);
   }
 
   private async runRoundRobinUploadResumed(
@@ -518,7 +518,7 @@ export class TransferEngine {
       for (const q of queues.values()) q.abort(err);
       throw err;
     }
-    await Promise.all(workers);
+    await settleWorkers(workers);
   }
 
   /**
@@ -774,7 +774,7 @@ export class TransferEngine {
       for (const q of queues.values()) q.abort(err);
       throw err;
     }
-    await Promise.all(workers);
+    await settleWorkers(workers);
   }
 
   private async runRoundRobinUpload(state: OutgoingState): Promise<void> {
@@ -851,7 +851,7 @@ export class TransferEngine {
       for (const q of queues.values()) q.abort(err);
       throw err;
     }
-    await Promise.all(workers);
+    await settleWorkers(workers);
   }
 
   private async runLaneWorker(
@@ -1596,3 +1596,25 @@ function snapshotIncomingLanes(
   }
   return out;
 }
+
+/**
+ * Wait for every lane worker, then report the first real failure.
+ *
+ * `Promise.all` rejects the moment one worker throws and leaves the others
+ * running with nobody holding their rejections — so an abort, which fails
+ * every lane at once, produces one propagated error and N-1 unhandled ones.
+ * Bun counts an unhandled rejection as a test failure, which is how the resume
+ * test failed roughly one run in fourteen on 08.09.2026 with a
+ * `TransferAbortError` the test had already caught through the handle.
+ *
+ * An abort is not the interesting failure when a real one is present, so a
+ * genuine error is preferred over `TransferAbortError` when both occurred.
+ */
+async function settleWorkers(workers: Promise<unknown>[]): Promise<void> {
+  const results = await Promise.allSettled(workers);
+  const errors = results
+    .filter((r): r is PromiseRejectedResult => r.status === 'rejected')
+    .map((r) => r.reason);
+  if (errors.length === 0) return;
+  throw errors.find((e) => !(e instanceof TransferAbortError)) ?? errors[0];
+}