dragend resetTextColor

Author: odeimaiz

services/static-webserver/client/source/class/osparc/dashboard/FolderButtonItem.js

@@ -236,15 +236,18 @@ qx.Class.define("osparc.dashboard.FolderButtonItem", {
         if (compatible) {
           this.getChildControl("icon").setTextColor("strong-main");
         } else {
-          // do not allow
           this.getChildControl("icon").setTextColor("danger-red");
+          // do not allow
           e.preventDefault();
         }
       });
 
       this.addListener("dragleave", () => {
         this.getChildControl("icon").resetTextColor();
       });
+      this.addListener("dragend", () => {
+        this.getChildControl("icon").resetTextColor();
+      });
 
       this.addListener("drop", e => {
         if (e.supportsType("osparc-moveStudy")) {