connection issues – Windows sees the old content of a particular Android folder

I have a problematic folder in my Android tablet (Android 7.1.1) which didn’t refresh in Windows 7 after connecting the tablet with PC by USB cable (NOT as a Mass Storage Device) and trying to refresh it in Windows Explorer (F5).

I use this folder for saving Python files from PyDroid application and want to back up its content to my Windows PC. In Windows, I don’t see new files, and modified old files I see with their unmodified sizes / dates.

Other folders work OK, so I use them as a workaround — I first copy all files from that problematic folder to another one (in Android tablet) and then copy these copies to my PC.

What is the reason and how to fix it?