Fix GUI slider, caret, and selectors bug

Author: Dutchman101

Client/gui/CGUI_Impl.cpp

@@ -1410,11 +1410,22 @@ bool CGUI_Impl::Event_RedrawRequested(const CEGUI::EventArgs& Args)
 {
     const CEGUI::WindowEventArgs& e = reinterpret_cast<const CEGUI::WindowEventArgs&>(Args);
 
-    CGUIElement* pElement = reinterpret_cast<CGUIElement*>((e.window)->getUserData());
+    // Get the master window (walks up parent hierarchy for child widgets)
+    CEGUI::Window* pMasterWindow = GetMasterWindow(e.window);
+    
+    CGUIElement* pElement = reinterpret_cast<CGUIElement*>(pMasterWindow->getUserData());
     if (pElement)
+    {
+        // Add to queue for crash-protected deferred redraw
         AddToRedrawQueue(pElement);
+        // Also redraw immediately for responsiveness
+        pElement->ForceRedraw();
+    }
     else
-        e.window->forceRedraw();
+    {
+        // Fallback: if no data found, force immediate redraw
+        pMasterWindow->forceRedraw();
+    }
 
     return true;
 }