diff --git a/internal/cc/feedback_adapter.go b/internal/cc/feedback_adapter.go
index 4d634e64..9760fba5 100644
--- a/internal/cc/feedback_adapter.go
+++ b/internal/cc/feedback_adapter.go
@@ -182,6 +182,11 @@ func (f *FeedbackAdapter) OnTransportCCFeedback(
 		}
 	}
 
+	// Discard padding slots from the last StatusVectorChunk.
+	if int(feedback.PacketStatusCount) < len(result) {
+		result = result[:feedback.PacketStatusCount]
+	}
+
 	return result, nil
 }
 
diff --git a/internal/cc/feedback_adapter_test.go b/internal/cc/feedback_adapter_test.go
index 89ffb5f4..adbcc1bb 100644
--- a/internal/cc/feedback_adapter_test.go
+++ b/internal/cc/feedback_adapter_test.go
@@ -671,7 +671,7 @@ func TestFeedbackAdapterTWCC(t *testing.T) {
 		assert.NoError(t, err)
 
 		assert.NotEmpty(t, results)
-		assert.Len(t, results, 7)
+		assert.Len(t, results, 2)
 		assert.Contains(t, results, Acknowledgment{
 			SequenceNumber: 65535,
 			Size:           pkt65535.Header.MarshalSize() + 1200,
@@ -739,7 +739,7 @@ func TestFeedbackAdapterTWCC(t *testing.T) {
 			},
 		})
 		assert.NoError(t, err)
-		assert.Len(t, results, 7)
+		assert.Len(t, results, 3)
 		for i := range uint16(3) {
 			assert.Contains(t, results, Acknowledgment{
 				SequenceNumber: i,
@@ -748,14 +748,6 @@ func TestFeedbackAdapterTWCC(t *testing.T) {
 				Arrival:        t0.Add(time.Duration((i + 1)) * 4 * time.Microsecond),
 			})
 		}
-		for i := uint16(3); i < 7; i++ {
-			assert.Contains(t, results, Acknowledgment{
-				SequenceNumber: i,
-				Size:           headers[i].MarshalSize() + 1200,
-				Departure:      t0,
-				Arrival:        time.Time{},
-			})
-		}
 	})
 
 	t.Run("runLengthChunk", func(t *testing.T) {
@@ -858,7 +850,7 @@ func TestFeedbackAdapterTWCC(t *testing.T) {
 		})
 
 		assert.NoError(t, err)
-		assert.Len(t, packets, 14)
+		assert.Len(t, packets, 3)
 	})
 
 	t.Run("mixedRunLengthAndStatusVector", func(t *testing.T) {