This is what I did to get rid of the navigation bar after update:
Step 1: Open Settings, scroll down and click on Accessibility.
Step 2: In Accessibility, click on Installed services, then click on Select-to-speak and turn it off.
Step 3: Now go back to your settings page and click on Display
Step 4: In Display, scroll down and click on Navigation bar, and change it to full screen gesture (this option wasn't available cos the select to speak was active).
That's it. I hope it helps
Wow... I've just updated the software although I was avoiding it for over a year... because every update removes or changes functionalities.... what a disappointment really! Again !
Not only my favourite Theme looks completely different now but The navigation bar issue.... seriously, I really don't understand the point of removing the functionality of having a hidden navigation bar area that you could swipe up to appear when needed . This gesture stuff is horrible, and basically when you wanna go back to previous page you have to swipe up on the right side which can cause to just swipe up the page, this is so stupid!!!!
And I support everything that has been said in the thread. Why give up on a perfectly working and intuitive functionality and give only these two options of swiping up or the ugly navigation bar area that you cannot hide ... indeed why make efforts on making the phone's screen bigger if you mess it up later by such a stupid thing.
Super disappointed one another time. And yes, such a thing may make me reconsider if I would buy a Samsung again next time.... please fix this with the next update and bring back the option to have a hidden navigation bar !!!!