Fixes the issue with the image being stored as a base64 inline image, which can be HUGE & make POST request slow to save the content node

src/Umbraco.Web.UI.Client/src/common/services/tinymce.service.js

@@ -189,7 +189,10 @@ function tinyMceService($rootScope, $q, imageHelper, $locale, $http, $timeout, s
             // Put temp location into localstorage (used to update the img with data-tmpimg later on)
             localStorage.setItem(`tinymce__${blobInfo.blobUri()}`, json.tmpLocation);
 
-            success();
+            // We set the img src url to be the same as we started
+            // The Blob URI is stored in TinyMce's cache
+            // so the img still shows in the editor
+            success(blobInfo.blobUri());
         };
 
         formData = new FormData();