MAGETWO-82955: [Backport 2.2-develop] FIX show visual swatches in admin - product attribute #11747

 - Merge Pull Request magento/magento2#11747 from enriquei4/magento2:VALUES-VISUAL-SWATCH-2-2
 - Merged commits:
   1. 19d4264

Author: ishakhsuvarov

app/code/Magento/Swatches/view/adminhtml/web/css/swatches.css

@@ -3,6 +3,10 @@
  * See COPYING.txt for license details.
  */
 
+#swatch-visual-options-panel{
+    overflow: visible;
+}
+
 .swatch_sub-menu_container {
     position: absolute;
     z-index: 9999;