Hi,
By CCleaner Version 5.47.6716 if we clean System, it not clean 'Recent Files' from Notepad++ Version 7.5.8.
I kept my Notepad++ at location 'F:\Applications\Notepad++\'.
Here I attached screenshots.
I dont know from which version It stop cleaning 'Recent Files' but it was working.
Hope, if it might Known Bug/Bug/issue then Software Developer will solve this Known Bug/Bug/issue.
Debug Info of Notepad++ is as follows:-
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Notepad++ v7.5.8 (64-bit)
Build time : Jul 23 2018 - 02:06:36
Path : F:\Applications\Notepad++\notepad++.exe
Admin mode : OFF
Local Conf mode : OFF
OS : Windows 10 (64-bit)
Plugins : DSpellCheck.dll mimeTools.dll NppConverter.dll
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Thanks,
Mandar Khire.