Since my own Windows 7 machine I was able to use the shortcut Alt+1 in my explorer in order to open file or folder attributes (detail window with the file size and other properties).
This also worked a long time on Windows 10 but since a few days after the 1903 update it is no longer functional.
Now I have to use Alt+Enter (Alt+Return) in order to get the window.
How do I enable Alt+1 again? Was this a Windows built-in feature? Or the shortcut of another program? I am not quite sure, but Alt+1 is so much easier because of the only left hand use.