modify css

src/client/styles/scss/_linkedit-preview.scss

@@ -1,8 +1,8 @@
-.linkedit-preview {
+.modal .modal-body .linkedit-preview {
   height: 0;
   padding-bottom: 50%;
 
   .page-editor-preview-body {
-    overflow-y: unset !important;
+    overflow-y: unset;
   }
 }