One can also enable/disable Hibernate under Power Options, Choose what the power button does link, activating the Change settings that are currently unavailable link, then checking/unchecking the Hibernate checkbox.
While you're in there uncheck the Turn on Fast Startup (recommended) checkbox.
I turned the presentation of Hibernate in the Power menu back on at the same time that I turned Fast Startup off.
Brian - Windows 10 Home, 64-Bit, Version 1809, Build 17763
A great deal of intelligence can be invested in ignorance when the need for illusion is deep.
~ Saul Bellow, To Jerusalem and Back