diff --git a/src/System.Windows.Forms/src/System/Windows/Forms/Controls/ToolStrips/ToolStrip.cs b/src/System.Windows.Forms/src/System/Windows/Forms/Controls/ToolStrips/ToolStrip.cs
index a14a5ac354c..a7d78660e5e 100644
--- a/src/System.Windows.Forms/src/System/Windows/Forms/Controls/ToolStrips/ToolStrip.cs
+++ b/src/System.Windows.Forms/src/System/Windows/Forms/Controls/ToolStrips/ToolStrip.cs
@@ -4578,6 +4578,9 @@ protected override void WndProc(ref Message m)
         if (m.MsgInternal == PInvokeCore.WM_SETFOCUS)
         {
             SnapFocus((HWND)(nint)m.WParamInternal);
+
+            // For fix https://github.com/dotnet/winforms/issues/12916
+            ToolStripManager.ModalMenuFilter.SetActiveToolStrip(this);
         }
 
         if (!AllowClickThrough && m.MsgInternal == PInvokeCore.WM_MOUSEACTIVATE)