Fix null sizes in TaskbarPlayer

ZuneDBApi/CLAUDE.md

@@ -13,6 +13,8 @@ desktop software. The dependency chain is:
 ZuneDBApi (this project) → ZuneImpl → ZuneShell.dll → ZuneHost / ZuneHost.Wpf (entry points)
 ```
 
+The original DLL is currently located at `../../windows/shared/zune-x64/Zune/ZuneDBApi.dll`.
+
 Note that Iris UI files (both `.uix` and `.uib`) can load arbitrary assemblies.
 This meaans that `ZuneShell.dll` has a direct dependency on `ZuneDBApi`, even
 though according to the C# project system, `ZuneDBApi` is only a transitive

ZuneDBApi/Microsoft.Zune/Util/TaskbarPlayer.cs

@@ -32,9 +32,9 @@ public class TaskbarPlayer : ModelItem, IDisposable
         }
     }
 
-    public Size PopupSize { get; private set; }
+    public Size PopupSize { get; private set; } = new(200, 400);
 
-    public Point PopupPosition { get; private set; }
+    public Point PopupPosition { get; private set; } = new(0, 0);
 
     private bool m_fPopupVisible;