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%;}
 }

www/views/tab-send.html

@@ -2,8 +2,9 @@
   <ion-nav-bar class="bar-royal">
     <ion-nav-title>{{'Send' | translate}}</ion-nav-title>
   </ion-nav-bar>
-  <ion-content scroll="false" class="ng-hide" ng-show="!hasFunds">
-    <div class="zero-state">
+  <ion-content>
+    <div ng-if="hasFunds == false" class="zero-state">
+      <div>
         <i class="icon zero-state-icon">
           <img src="img/tab-icons/ico-send-selected.svg"/>
         </i>
@@ -16,8 +17,8 @@
           <button class="button button-standard button-secondary" ui-sref="tabs.receive" ng-show="hasWallets" translate>Show bitcoin address</button>
         </div>
       </div>
-  </ion-content>
-  <ion-content class="ng-hide has-funds" ng-show="hasFunds">
+    </div>
+    <div ng-if="hasFunds" class="has-funds">
       <div class="item item-heading send-heading" translate>Recipient</div>
       <label class="item item-input bitcoin-address">
         <i class="icon icon-svg placeholder-icon"><img src="img/icon-bitcoin-symbol.svg"></i>
@@ -71,5 +72,6 @@
           </a>
         </div>
       </div>
+    </div>
   </ion-content>
 </ion-view>