Strange-looking Workbook opened after BeforeClose

I'm testing some code, which should copy data to a global tracker whenever the user finishes their work and closes it. It's working fine when I test it with a button but when I use it with BeforeClose event the destination Excel opens blank with no ribbon, menu bar, no date is pasted in and there is some strange line visible across the window (see attachment). It's random, sometimes it works normally, sometimes it doesn't. Would anyone know why it's happening?

That's my code:

    Private Sub Workbook_BeforeClose(Cancel As Boolean)

 Dim path As String
 Dim wb As Workbook

 Cancel = False
 path = ThisWorkbook.path & "\Test.xlsx"

 Range("A1:F10").Copy

 On Error GoTo Handler
 Workbooks.Open (path)
 On Error GoTo 0

 Set wb = Workbooks("Test")
 Worksheets("Sheet1").Range("A1").PasteSpecial Paste:=xlPasteValues
 Application.CutCopyMode = False
'wb.Close False
 MsgBox "OK"

Exit Sub

Handler:
MsgBox "Someone else is saving their data at the moment."& vbNewLine & _
    "Please try in a few seconds"
Cancel = True

End Sub