It does work for me. It only makes a difference in the main screens of the gallery (Main screen with Albums or Pictures). After turning this option on, when you scroll down, the tabs on the bottom Pictures/Albums/Stories will disappear until you start scrolling upwards.
@Adem0 Fine to mark as Solution. Yes @Mishal , have found that the the Tabs at the bottom disappear when scrolling downwards. Just for clarification Members are unable to delete posts from web page, can edit them. It is possible via Samsung Members.
You can delete the post actually. Goto Mypage tab on the bottom of the main screen of members app. Then go to Post and open the post you want to delete. Press the dots on top right and you will find edit and delete buttons.