Makes debug icon hide when collapsing toolbar

vector/src/main/java/im/vector/app/features/home/NewHomeDetailFragment.kt

@@ -28,6 +28,7 @@ import androidx.lifecycle.lifecycleScope
 import com.airbnb.mvrx.activityViewModel
 import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.withState
+import com.google.android.material.appbar.AppBarLayout
 import com.google.android.material.badge.BadgeDrawable
 import im.vector.app.R
 import im.vector.app.SpaceStateHandler
@@ -377,6 +378,10 @@ class NewHomeDetailFragment @Inject constructor(
             sharedActionViewModel.post(HomeActivitySharedAction.CloseDrawer)
             navigator.openDebug(requireActivity())
         }
+
+        views.appBarLayout.addOnOffsetChangedListener(AppBarLayout.OnOffsetChangedListener { _, verticalOffset ->
+            views.debugButton.isVisible = verticalOffset == 0
+        })
     }
 
     private fun refreshDebugButtonState() {

vector/src/main/res/layout/fragment_new_home_detail.xml

@@ -68,8 +68,8 @@
                         android:id="@+id/avatar"
                         android:layout_width="36dp"
                         android:layout_height="36dp"
-                        android:padding="6dp"
                         android:contentDescription="@string/a11y_open_settings"
+                        android:padding="6dp"
                         tools:src="@sample/user_round_avatars" />
 
                 </com.google.android.material.appbar.MaterialToolbar>