Notepad beats them all?

On a Windows Server 2012 R2 system, a Kotlin program uses FileChannel.tryLock() to hold an exclusive lock on a file, like this:

val fileRw = RandomAccessFile(file, "rw")
fileRw.channel.tryLock()

With this lock in place, I cannot open the file with:

• WordPad
• Notepad++

• Programmatically with C#, for any value of FileShare:

  using (var fileStream = new FileStream(processIdPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
  using (var textReader = new StreamReader(fileStream))
  {
      textReader.ReadToEnd();
  }
  

• From the command line, the type command:

  C:\some-directory>type file.txt
  The process cannot access the file because another process has locked a portion of the file.
  

• Internet Explorer (yes, I was desperate)

I can open it with Notepad.

How the heck is Notepad able to open a locked file that nothing else can?