diff --git a/app/src/main/java/com/k2fsa/sherpa/onnx/MainActivity.kt b/app/src/main/java/com/k2fsa/sherpa/onnx/MainActivity.kt
index 7730349..bda4460 100644
--- a/app/src/main/java/com/k2fsa/sherpa/onnx/MainActivity.kt
+++ b/app/src/main/java/com/k2fsa/sherpa/onnx/MainActivity.kt
@@ -1701,6 +1701,10 @@ class MainActivity : AppCompatActivity() {
         val bottom = list.lastOrNull() ?: return
         pendingOnsetLabel = label
         pendingOnsetLabelAt = SystemClock.elapsedRealtime()
+        // 换行标签不依赖"partial 及时到达"(2026-09-16:预置 5s 过期曾致新行
+        // 沿用旧标签,观感=没换人——实锤 S2 案预置 16s 后丢弃):落锤即写
+        // 最近确认说话人,此后任何时刻开的新行都挂新标
+        lastConfirmedLabel = label
         if (!bottom.open) return   // 底行已封:下一行自然消费预置标签
         val busy = bottom.sentences.any { !it.finalized }
         if (busy) {