Unable to update MS tag using Microsoft.WindowsAPICodePack.Shell.PropertySystem .tmp files are getting created

Question

I am using .net core 6 console app to write tags to Microsoft Files like Word/Excel, in some cases, the code is creating .tmp files and not updating the tag of the file, the code does not throw any exceptions as well.
Kindly suggest a way to write file tag programmatically or let me know what I need to correct in the below code.

using Microsoft.WindowsAPICodePack.Shell;
using Microsoft.WindowsAPICodePack.Shell.PropertySystem;

                var shellFile = ShellFile.FromFilePath(filePath);  
                ShellPropertyWriter propertyWriter = shellFile.Properties.GetPropertyWriter();  
                propertyWriter.WriteProperty(SystemProperties.System.Keywords, tag);                      
                propertyWriter.Close();  
                propertyWriter.Dispose();