fix flicker issue

src/js/controllers/tab-send.js

@@ -149,6 +149,9 @@ angular.module('copayApp.controllers').controller('tabSendController', function(
         }
       });
     });
+    if ($scope.hasFunds != true) {
+      $ionicScrollDelegate.freezeScroll(true);
+    }
   };
 
   $scope.$on("$ionicView.beforeEnter", function(event, data) {

src/sass/views/tab-send.scss

@@ -71,4 +71,5 @@
       }
     }
   }
+  .scroll{height: 100%;}
 }