diff --git a/CHANGELOG.md b/CHANGELOG.md
index e263886a..beed860f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 * 2.0.9
     - fixed ignore for istanbul (#3)
     - fixed duplicate source file 
-    - updated UI
+    - fixed UI issues
 
 * 2.0.8
     - added new feature `v8 ignore next N/start/stop`
diff --git a/packages/v8/src/app.vue b/packages/v8/src/app.vue
index b4c4f473..dd439d17 100644
--- a/packages/v8/src/app.vue
+++ b/packages/v8/src/app.vue
@@ -661,17 +661,25 @@ const getGridData = () => {
 };
 
 const watermarkFilter = (status) => {
-    if (!status) {
-        return false;
-    }
+
     const map = {
         low: state.watermarkLow,
         medium: state.watermarkMedium,
         high: state.watermarkHigh
     };
+
+    // always true if all checked
+    if (map.low && map.medium && map.high) {
+        return true;
+    }
+
+    // shows unknown if all unchecked
+    map.unknown = !map.low && !map.medium && !map.high;
+
     if (map[status]) {
         return true;
     }
+
     return false;
 };
 
@@ -684,7 +692,7 @@ const searchHandler = (rowItem) => {
     const status = rowItem[`${state.watermarkType}_status`];
     const watermarkGate = watermarkFilter(status);
     if (!watermarkGate) {
-        return;
+        return false;
     }
 
     const keywords = state.keywords.trim().toLowerCase();