GTK Applications doesn't scale on plasma desktop or i3 window manager
Steps to reproduce
- Install Gnome calculator application on Kubuntu
- Increase scale of display to 2 using the settings display and reboot
- Start calculator app.
We expect the toolbar icons to scale according to the display scale set
Kubuntu 18.04 with plasma desktop GTK 3.22
Same can be seen with i3 window manager as well