Why does the event handler not fire completely?

Question

WPF

Hello everyone, there is a small WPF program, it has a button responsible for sending data to Word, but when you click on the button, nothing happens (more precisely, it only saves, but the Word document does not open, although this is written in the code)
If you click the button again time, then the handler will be executed normally, what could be the reason?

GIF


Button code

Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();
            Document doc = app.Documents.Add(Visible: true);
            doc.Save();
            app.Documents.Open(@"C:\1.docx");

PS From the 1st time, Word itself opens (it hangs in the task manager, but in background processes), from the 2nd time, Word goes to the Application in the task manager

Answer 1

https://github.com/UNIT6-open/TemplateEngine.Docx and no need to fence your bike. Well, don't ask the same question over and over again. But if you wish, put a pause between opening and saving.