Use StackView activation callbacks to perform init and cleanup since visibility callbacks aren't guaranteed to run in any order

app/gui/StreamSegue.qml

@@ -15,11 +15,6 @@ Item {
 
     anchors.fill: parent
 
-    // The StackView will trigger a visibility change when
-    // we're pushed onto it, causing our onVisibleChanged
-    // routine to run, but only if we start as invisible
-    visible: false
-
     function stageStarting(stage)
     {
         // Update the spinner text
@@ -105,35 +100,34 @@ Item {
         id: gamepadKeyNav
     }
 
-    onVisibleChanged: {
-        if (visible) {
-            // Hide the toolbar before we start loading
-            toolBar.visible = false
+    StackView.onActivated: {
+        // Hide the toolbar before we start loading
+        toolBar.visible = false
 
-            // Set the hint text. We do this here rather than
-            // in the hintText control itself to synchronize
-            // with Session.exec() which requires no concurrent
-            // gamepad usage.
-            hintText.text = gamepadKeyNav.getConnectedGamepads() > 0 ?
-                      "Tip: Press Start+Select+L1+R1 to disconnect your session" :
-                      "Tip: Press Ctrl+Alt+Shift+Q to disconnect your session"
+        // Set the hint text. We do this here rather than
+        // in the hintText control itself to synchronize
+        // with Session.exec() which requires no concurrent
+        // gamepad usage.
+        hintText.text = gamepadKeyNav.getConnectedGamepads() > 0 ?
+                  "Tip: Press Start+Select+L1+R1 to disconnect your session" :
+                  "Tip: Press Ctrl+Alt+Shift+Q to disconnect your session"
 
-            // Hook up our signals
-            session.stageStarting.connect(stageStarting)
-            session.stageFailed.connect(stageFailed)
-            session.connectionStarted.connect(connectionStarted)
-            session.displayLaunchError.connect(displayLaunchError)
-            session.displayLaunchWarning.connect(displayLaunchWarning)
-            session.quitStarting.connect(quitStarting)
-            session.sessionFinished.connect(sessionFinished)
+        // Hook up our signals
+        session.stageStarting.connect(stageStarting)
+        session.stageFailed.connect(stageFailed)
+        session.connectionStarted.connect(connectionStarted)
+        session.displayLaunchError.connect(displayLaunchError)
+        session.displayLaunchWarning.connect(displayLaunchWarning)
+        session.quitStarting.connect(quitStarting)
+        session.sessionFinished.connect(sessionFinished)
 
-            // Run the streaming session to completion
-            session.exec(Screen.virtualX, Screen.virtualY)
-        }
-        else if (!quitAfter) {
-            // Show the toolbar again when we become hidden
-            toolBar.visible = true
-        }
+        // Run the streaming session to completion
+        session.exec(Screen.virtualX, Screen.virtualY)
+    }
+
+    StackView.onDeactivating: {
+        // Show the toolbar again
+        toolBar.visible = true
     }
 
     Row {