The Sticky Navigation under the new Mega Electronics Demo works by default as you can confirm from our Test Site too: https://blackpearlspro.com/woodmart_support/
So, we didn’t get in this regard that you mentioned. Could you please elaborate further?
Actually, when you hover the mega menu then when you scroll down suddenly at that time the sticky header loads and you can not see the menu completely because the menu is also loaded in the Sticky header. So if you want the same functionality as in your site then you should disable the sticky header from WoodMart >> Header Builder >>
Edit the Header Settings >> Sticky Header Tab >> uncheck the Sticky Header Clone Option and save it. Also you need to make sure that you did not select your row as sticky in which you used your main menu. You can check the below screenshot for clarification: https://jmp.sh/ra2PzoI
As for the sticky navigation, check our documentation for a detailed instruction https://xtemos.com/docs-topic/sticky-navigation/