Method Invocation Exception,Null Reference Exception displayed in powershell when uiautomation clicks the Microsoft Word File Tab.

Question

Steps：

1. Open the microsoft word document [Office19_W_006_PCL6-E_A4LCp17EN.docx]
2. In Microsoft Word Document Window, Click File Tab.
   Here, I used Microsoft Uiautomation API below
   Step2.1. Click File Tab by Invoke() ->Exception Occured, Goto Step2.2
   Step2.2. Click File Tab by Select() ->Exception Occured, Goto Step2.3
   Step2.3. Click File Tab by Toggle() ->Exception Occured, Goto powershell Error
3. Powershell Error:
   

Question:
Is there something wrong with the document I used?
or Is there something wrong with the Microsoft Uiautomation API I used?

When I used other .docx document to test, exception above does not occur.
When I delete some data like this, the powershell script will be run OK.

Comments:
Microsoft Word document's File Tab UI infomation got by inspect.exe.

Answer 1

Is there anyone can follow this question?
@tbgangav-MSFT