Filed locked after calling FileRef.CreateFromLocalFile

Using Export To Docx I want to delete the original PDF file after calling the following:

FileRef sourceFileRef = FileRef.CreateFromLocalFile();

After Creating PDF from local file. I want to delete the original file but a lock remains on the file.

When I try to delete the file with File.Delete, an exception is thrown that there is a lock on the file from another process.

I cannot dispose of the the FileRef and even after setting the object to null, the lock remains.

The issue names FileRef.CreateFromLocalFile and File.Delete; start by reproducing that sequence with the Export To Docx flow and observe when the original PDF remains locked. Done means the original file can be deleted after PDF creation without a lock exception, and the required FileRef cleanup behavior is identified.

Written by the indexing model from the issue text.