When an album is collapsed/expanded in playqueue, call dataChanged() so that

title row is redrawn - otherwise, for single-track albums, the view might
not get refreshed.

ChangeLog

@@ -6,9 +6,13 @@
 3. Give tray icon a tooltip - thanks to Martin Blumenstingl for the patch.
 4. Apply 'group single track albums' to devices.
 5. Add option to group albums with multiple artists under Various Artists.
-6. When checking whether a song exists in device, or library, need to also check
-   'single tracks' and 'multiple artist' groupings - if these have been enabled.
+6. When checking whether a song exists in device, or library, need to also
+   check 'single tracks' and 'multiple artist' groupings - if these have been
+   enabled.
 7. Update playlists if modified by another client.
+8. When an album is collapsed/expanded in playqueue, call dataChanged() so that
+   title row is redrawn - otherwise, for single-track albums, the view might
+   not get refreshed.
 
 0.5.1
 -----

widgets/groupedview.cpp

@@ -479,6 +479,8 @@ void GroupedView::toggle(const QModelIndex &idx)
                 break;
             }
         }
+
+        dataChanged(idx, idx);
     }
 }