Make mouse click on right edge of screen act on scroll bar

In firefox, if I move my mouse to extreme right of the screen and do left click, the scroll bar will respond to this click. But this function does not hold for all applications. Is there any possible way to bring this function to other applications?

In fact, what I need is to achieve this function in Foxit Reader. Instead of adopting the system window style, Foxit Reader has its own UI, so I think simply change the desktop theme may not help and some tweak with X-server will be needed. By the way, I am using ubuntu 20.04 with gnome.