diff --git a/doc/description.md b/doc/description.md
index 0868dbca..06f2b747 100644
--- a/doc/description.md
+++ b/doc/description.md
@@ -19,6 +19,8 @@ Mouseover Translate Any Language At Once
 English, Russian, Japanese, Chinese and so on
 
 # Change Log
+- 0.1.112
+  - fix tooltip highlight (request by marcello-pietrobon)
 - 0.1.111
   - support tooltip border (request by pussykiller)
   - support writing translate on url search box (type "/ " to start) (request by Enlight432)
diff --git a/src/popup.vue b/src/popup.vue
index b56d40c1..df410cb9 100644
--- a/src/popup.vue
+++ b/src/popup.vue
@@ -196,9 +196,11 @@
 import * as util from "/src/util";
 import { isProxy, toRaw } from "vue";
 import AboutPage from "./components/about.vue";
+import { cloneDeep } from "lodash";
 
 var langList = util.langList;
 var langListWithAuto = util.concatJson({ Auto: "auto" }, langList); //copy lang and add auto
+var langListWithNone = util.concatJson({ None: "null" }, langList); //copy lang and add none
 var langListOpposite = util.langListOpposite;
 
 var toggleList = {
@@ -358,10 +360,7 @@ var detectTypeList = {
   Container: "container",
 };
 
-var translateListWithNone = util.copyJson(langList); //copy lang and add auto
-translateListWithNone["None"] = "null";
-
-var keyListWithAlways = util.copyJson(keyList); //copy lang and add auto
+var keyListWithAlways = cloneDeep(keyList); //copy lang and add auto
 keyListWithAlways["Always"] = "always";
 
 var voiceTargetList = {
@@ -521,7 +520,7 @@ var advancedTabData = {
   },
   translateReverseTarget: {
     description: chrome.i18n.getMessage("Reverse_Translate_Language"),
-    optionList: translateListWithNone,
+    optionList: langListWithNone,
   },
   useTransliteration: {
     description: "Enable Transliteration (Experimental)",
@@ -663,12 +662,6 @@ export default {
       link.download = "Mouse_Tooltip_Translator_History.csv";
       link.click();
     },
-    copyToClipboard(sourceText, targetText) {
-      var text = sourceText + " \n" + targetText;
-      navigator.clipboard.writeText(text).then((response) => {
-        this.copyAlertBar = true;
-      });
-    },
     wrapWithTitleValueKey(inputList) {
       // convert {key:item}  as {title:key, value:item}
       var textValList = [];
diff --git a/src/translator/baseTranslator.js b/src/translator/baseTranslator.js
index 71c32434..b92208b4 100644
--- a/src/translator/baseTranslator.js
+++ b/src/translator/baseTranslator.js
@@ -1,4 +1,4 @@
-import { isEmpty, swapJsonKeyValue } from "/src/util";
+import { isEmpty, invert } from "lodash";
 
 export default class BaseTranslator {
   static langCodeJson = {};
@@ -31,7 +31,7 @@ export default class BaseTranslator {
   }
   static decodeLangCode(lang) {
     if (isEmpty(this.langCodeJsonSwapped)) {
-      this.langCodeJsonSwapped = swapJsonKeyValue(this.langCodeJson);
+      this.langCodeJsonSwapped = invert(this.langCodeJson);
     }
     return this.langCodeJsonSwapped[lang]
       ? this.langCodeJsonSwapped[lang]
diff --git a/src/util/index.js b/src/util/index.js
index 917c5c01..8b2562f2 100644
--- a/src/util/index.js
+++ b/src/util/index.js
@@ -645,14 +645,6 @@ export function copyJson(json) {
   return JSON.parse(JSON.stringify(json));
 }
 
-export function isEmpty(obj) {
-  return Object.keys(obj).length === 0;
-}
-
-export function swapJsonKeyValue(json) {
-  return _.invert(json);
-}
-
 export function sortJsonByKey(json) {
   return Object.keys(json)
     .sort()
@@ -705,6 +697,58 @@ export function copyTextToClipboard(text) {
   navigator.clipboard.writeText(text);
 }
 
+//rect===============================
+
+export function filterOverlappedRect(rects) {
+  //filter duplicate rect
+  var rectSet = new Set();
+  rects = Array.from(rects).filter((rect) => {
+    var key = getRectKey(rect);
+    if (!rectSet.has(key)) {
+      rectSet.add(key);
+      return true;
+    }
+    return false;
+  });
+
+  //filter covered rect by other rect
+  rects = rects.filter((rect1) => {
+    for (const rect2 of rects) {
+      if (getRectKey(rect1) != getRectKey(rect2) && rectCovered(rect1, rect2)) {
+        return false;
+      }
+    }
+    return true;
+  });
+
+  return rects;
+}
+
+function getRectKey(rect) {
+  return `${rect.left}${rect.top}${rect.width}${rect.height}`;
+}
+
+function rectCovered(rect1, rect2) {
+  return (
+    rect2.top <= rect1.top &&
+    rect1.top <= rect2.bottom &&
+    rect2.top <= rect1.bottom &&
+    rect1.bottom <= rect2.bottom &&
+    rect2.left <= rect1.left &&
+    rect1.left <= rect2.right &&
+    rect2.left <= rect1.right &&
+    rect1.right <= rect2.right
+  );
+}
+function rectCollide(rect1, rect2) {
+  return !(
+    rect1.top > rect2.bottom ||
+    rect1.right < rect2.left ||
+    rect1.bottom < rect2.top ||
+    rect1.left > rect2.right
+  );
+}
+
 // performance=======================================================
 export function cacheFn(fn) {
   var cache = {};