Linux desktop apps capable of being split screen. Mail and Pass apps can be full screen and resized but not split screen (shift + l/r in gnome). This is possible with any browser so moving to the apps you lose this capability. The VPN and Export apps can't be full screen but again a split screen capability would provide the same benefit. Splitting windows is a common option across Windows, Mac OS and Linux and if like me, it's how I have operated on machines for years.