I'm using J7 prime. In some Samsung apps like Samsung Notes, Samsung Internet..when I'm on latest version Appbar not extending or padding. I observed this is because J7 prime is 16:9 screen ratio phone. I have got S10 plus also but apps are extrending or padding fine in that phone. Please do updates considering old models also.
No there's no problem about phone . Just Samsung is not designing apps to run in 16:9 phone with app bar extending. Because 16:9 phones are old. If I put dp greater than 375dp then app bar extending fine. That means problem is in app designing. I downloaded some old version apps which are came just after one ui 3 release, they are working fine with extending appbar in normal 360dp also. Please samsung, continue making apps considering old 16:9 phones also 😔😔😔