This bug occurs if you use the popular cleaning software CCleaner to clean your PC, and to keep cleaning and keep your folders the way you like to see them, Follow these steps:
In the advanced tab in CCleaner you find windows size/location cache, unchek it in order for explorer to remember your folder settings.
Also Notification area “forgets” whats on and not, because of ccleaner’s setting called Tray Notification cache.
All the tests were conducted by changing a few settings at a time, then restarting.
Hope this Tip solved your bug.
Have a wonderful day.