UI not properly scaled on 21:9 native (2560x1080)

Hello, I have been playing Apex Legends for about 5 years now and recently switched to PC. I have been using 1920x1080(16:9) stretched on my Ultrawide monitor for a long time now. Using these settings, the UI elements and everything else is properly scaled with zero issues. But once I change to native (21:9) 2560:1080, it goes like this, Everything UI related is centered on the screen, it feels like the game is running on 16:9 aspect ratio but then later on filling up the sides where the black bars is supposed to be. Loading screens are displayed in 16;9 with black bars and then it goes back to 21:9 again filling up the sides but keeping the UI elements centered. 

What i want is for everything to be properly displayed on each SIDE & CORNER of the monitor, I have tried messing with a lot of settings but I cant seem to fix it. 

Thank you in advance.