diff --git a/javaTest/scripts/visualizer_browser_qa.py b/javaTest/scripts/visualizer_browser_qa.py
index 1dc4ea1..1404227 100644
--- a/javaTest/scripts/visualizer_browser_qa.py
+++ b/javaTest/scripts/visualizer_browser_qa.py
@@ -27,6 +27,7 @@ def horizontal_overflow(page):
 
 def run_point_to_point(page):
     """Execute the real point simulation and verify route evidence is rendered."""
+    page.locator("#swap-sites").click()
     page.locator("#run-point").click()
     page.locator("#task-status").wait_for(state="visible", timeout=120_000)
     page.locator("#loading-state").wait_for(state="hidden", timeout=120_000)
@@ -60,6 +61,8 @@ def verify_map_interactions(page):
     page.locator("#show-current-route").uncheck()
     require(page.locator("#dynamic-route-layer .planned-only").count() == 0,
             "current route remained visible after its layer was disabled")
+    require(page.locator("#dynamic-route-layer .approach").count() == 0,
+            "approach route remained visible after the current layer was disabled")
     require(page.locator(".map-floor-layer:not([hidden]) .map-edge").count() == map_edges,
             "disabling current route changed the authoritative map")
     page.locator("#show-current-route").check()
diff --git a/javaTest/src/main/java/com/ft546/wcs/shadow/history/visualizer/HistoricalRouteQualityMapper.java b/javaTest/src/main/java/com/ft546/wcs/shadow/history/visualizer/HistoricalRouteQualityMapper.java
index c66be12..1cac43f 100644
--- a/javaTest/src/main/java/com/ft546/wcs/shadow/history/visualizer/HistoricalRouteQualityMapper.java
+++ b/javaTest/src/main/java/com/ft546/wcs/shadow/history/visualizer/HistoricalRouteQualityMapper.java
@@ -40,6 +40,12 @@ final class HistoricalRouteQualityMapper {
         }
 
         double historicalDistance = distanceCalculator.pathDistance(map, historicalPath);
+        if (plannedPath.isEmpty()) {
+            // 失败或仍等待的任务没有新路线，不能把“无结果”伪装成算法质量退化。
+            return new HistoricalRouteComparison(
+                    HistoricalRouteComparison.Comparability.COMPARABLE,
+                    null, historicalDistance, null);
+        }
         if (!isValidPath(map, plannedPath)) {
             return new HistoricalRouteComparison(
                     HistoricalRouteComparison.Comparability.COMPARABLE,
diff --git a/javaTest/src/main/resources/visualizer/assets/app.js b/javaTest/src/main/resources/visualizer/assets/app.js
index b14bcfe..b221ecc 100644
--- a/javaTest/src/main/resources/visualizer/assets/app.js
+++ b/javaTest/src/main/resources/visualizer/assets/app.js
@@ -548,7 +548,9 @@
     }
     hideMapHint();
 
-    drawPath(layer, approach, "approach", project);
+    if (elements["show-current-route"].checked) {
+      drawPath(layer, approach, "approach", project);
+    }
     if (elements["show-initial-route"].checked) {
       drawPath(layer, initialService, "initial-service", project);
     }
diff --git a/javaTest/src/test/java/com/ft546/wcs/shadow/history/visualizer/HistoricalRouteQualityMapperTest.java b/javaTest/src/test/java/com/ft546/wcs/shadow/history/visualizer/HistoricalRouteQualityMapperTest.java
index 4baa306..68fbf8f 100644
--- a/javaTest/src/test/java/com/ft546/wcs/shadow/history/visualizer/HistoricalRouteQualityMapperTest.java
+++ b/javaTest/src/test/java/com/ft546/wcs/shadow/history/visualizer/HistoricalRouteQualityMapperTest.java
@@ -12,6 +12,7 @@ import java.util.Arrays;
 import java.util.Collections;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
 class HistoricalRouteQualityMapperTest {
 
@@ -70,6 +71,20 @@ class HistoricalRouteQualityMapperTest {
                 comparison.getQualityCategory());
     }
 
+    @Test
+    void excludesMissingPlannedRouteFromQualityClassification() {
+        GridMap map = map();
+        HistoricalRouteComparison comparison = new HistoricalRouteQualityMapper().compare(
+                map, "A", "D", Arrays.asList("A", "B", "D"),
+                Collections.<String>emptyList(), null, null);
+
+        assertEquals(HistoricalRouteComparison.Comparability.COMPARABLE,
+                comparison.getComparability());
+        assertEquals(10.0d, comparison.getHistoricalPhysicalDistance(), 0.000001d);
+        assertNull(comparison.getPlannedPhysicalDistance());
+        assertNull(comparison.getQualityCategory());
+    }
+
     private RouteQuality quality(GridMap map, java.util.List<String> path,
                                  TrafficRouteSnapshot snapshot) {
         double distance = new com.ft546.wcs.demo.traffic.RouteCandidatePlanner()