When connected to already open browser, shutdown method can not close the browser

[xfenng]

I use below way to connect already existing browser, but after finished the job, driver shutdown method can not quit the browser. Does anybody have this issue?
`Sub test()
Dim drv As New WebDriver
Dim cap As Capabilities
Dim shell

Set shell = CreateObject("WScript.Shell")
shell.Run "chrome.exe --remote-debugging-port=9222 --user-data-dir=""D:\test\chrome"""
 
drv.Chrome "D:\test\chromedriver.exe"

Set cap = drv.CreateCapabilities()
cap.debuggerAddress = "127.0.0.1:9222"

drv.OpenBrowser cap
drv.Navigate "https://www.bing.com"

' do something

drv.CloseBrowser
drv.Shutdown

End Sub
`