How does Notepad++ understands "last used directory" term?

Question

For the term of "last used directory" in Notepad++ I have these questions:

1. What is the exact meaning of in?
2. Exactly which directory will be taken as that each time?
3. When exactly Notepad++ changes this and to what value it sets this?

Or, please, explain what is that I don't understand in the following scenario.

Steps:

1. Set Settings → Preferences → Default Directory → Default Open/Save file Directory to Remember last used directory
2. Close and reopen Notepad++
3. Type anything and press Ctrl+S
4. Observe that the directory is set to C:\Program Files\Notepad++
5. Change it to something else (C:\Trash in my case)
6. Close and reopen Notepad++
7. Type anything and press Ctrl+S
8. Observe that the directory is still set to C:\Program Files\Notepad++
9. Repeat steps 5-8 until the cold death of the universe.

What am I missing here? If my "last save operation" changed directory to C:\Trash then why Notepad++ is not using it as the "last used directory"?

Answer 1

This is a known issue with Notepad++. It was previously resolved but it seems to be a problem once again as shown in these threads from Notepad++ community forum and Github respectively:

Notepad++ does not remember last used directory

"Default Directory" preference no longer works since the 7.95 release #9767

The possible fix that you can try/use for now is either:

1. To wait for the developer(s) to solve the problem
2. To find and use and older version of Notepad++