If turns off PC the opened folder should protected

If one has opened a locked folder, it will remain open.
This means that if one forgets to close that folder again after use, it remains open and accessible to everyone.
I think it is much safer that when one turns off the computer the folder should be locked automatically.
That is, the program must remember that the folder has been locked and lock it again before shutting down the computer.
This regardless of the number of locked folders that were opened.
I also tested it in "safe mode" and that is 100% safe (bravo!).