Screens 3 was a huge (and expensive) step forward for VNC clients on iOS. It focused on usability improvement and allowed to even administer a Mac on an iPhone.
Screens 4 goes back a big step of that journey – this time for "free". The remote-screen image became smaller, the shortcuts bar at the bottom bigger, the overall visual appearance is back in the 90s.
This is the point where you wish you could roll back to an older version of software on iOS, just as you do on a desktop computer.
MerlinDE about Screens: VNC Remote Desktop, v4.0.1