You probably enabled the Option "Hide Windows Items on File Context Menus (Shift overrides)" in Preferences=>Miscellaneous=>Windows Integration.
If so you should see the other entries when you press Shift + Right-Click on a File.
Thanks, you are right. And the shift-rklk is one answer.
However, After unchecking "hide", stopping and restarting DO, original behavior has not been restored.
I can live with shift-rklk, but would like to know more.