diff --git a/assets/js/translator.js b/assets/js/translator.js
index 297c04b93..3f4cb3d03 100644
--- a/assets/js/translator.js
+++ b/assets/js/translator.js
@@ -133,8 +133,6 @@ if(modeEnabled('translation')) {
             synchronizeTextareaHeights();
         });
 
-        $(window).resize(synchronizeTextareaHeights);
-
         $('#originalText').blur(function () {
             persistChoices('translator', true);
         });
diff --git a/assets/js/util.js b/assets/js/util.js
index 6037329b4..7a3bc9efd 100644
--- a/assets/js/util.js
+++ b/assets/js/util.js
@@ -11,6 +11,8 @@ var TEXTAREA_AUTO_RESIZE_MINIMUM_WIDTH = 768,
     BACK_TO_TOP_BUTTON_ACTIVATION_HEIGHT = 300,
     THRESHOLD_REQUEST_URL_LENGTH = 2000; // maintain 48 characters buffer for generated parameters
 
+var originalTextScrollHeight;
+
 // From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign#Polyfill
 /* eslint-disable */
 if (typeof Object.assign != 'function') {
@@ -162,6 +164,9 @@ $(document).ready(function () {
         return false;
     });
 
+    $('#originalText').mouseup(function () {
+        $('#originalText').css('overflow-y', $('#originalText').height() < originalTextScrollHeight ? 'scroll' : 'hidden');
+    });
 });
 
 if(config.PIWIK_SITEID && config.PIWIK_URL) {
@@ -278,7 +283,7 @@ function synchronizeTextareaHeights() {
         'overflow-y': 'hidden',
         'height': 'auto'
     });
-    var originalTextScrollHeight = $('#originalText')[0].scrollHeight;
+    originalTextScrollHeight = $('#originalText')[0].scrollHeight;
     $('#originalText').css('height', originalTextScrollHeight + 'px');
     $('#translatedText').css('height', originalTextScrollHeight + 'px');
 }