Though it should not move, there is a left arrow icon on top which should take you to the last folder. (ALT+LEFT Arrow key should also take you to the last folder)
However, you can try running SFC/DISM to see whether the default (right) behaviour of File Explorer is restored or not.
Well, in fact, it does move. It goes there as if it is opening up for the first time. Therefore, there is nothing to go back to. That arrow (and ALT+LEFT) works if I navigate to another folder and want to go back to the start. But, there it nothing before the page I am being taken to. Jut have to go all over again through clicking all of the folders to get to the sub-folder I need. Very frustrating. A functionality I'm sure no one asked for was put into the program? Horrible. Just plain horrible.