--- a/browser/base/content/browser-sync.js
+++ b/browser/base/content/browser-sync.js
@@ -299,16 +299,17 @@ var gSync = {
     const fragment = document.createDocumentFragment();
 
     const onTargetDeviceCommand = (event) => {
       let clients = event.target.getAttribute("clientId") ?
         [event.target.getAttribute("clientId")] :
         this.remoteClients.map(client => client.id);
 
       clients.forEach(clientId => this.sendTabToDevice(url, clientId, title));
+      gPageActionButton.panel.hidePopup();
     }
 
     function addTargetDevice(clientId, name, clientType) {
       const targetDevice = createDeviceNodeFn(clientId, name, clientType);
       targetDevice.addEventListener("command", onTargetDeviceCommand, true);
       targetDevice.classList.add("sync-menuitem", "sendtab-target");
       targetDevice.setAttribute("clientId", clientId);
       targetDevice.setAttribute("clientType", clientType);