Screen capture uses app-space shortcut `(ctrl+shift+alt+r)`
System level shortcuts use the <super>
key. By default the screen capture uses <ctrl>+<alt>+r
that the shell has avoided not to conflict with applications.
My initial suggestion would be to use <Super>+R
unless that's a conflict I haven't found. In future we might gain the ability to record an area which would become <Super>+<Shift>+r
to remain consistent.
To avoid the pain associated with changing a prominent shortcut we can ship multiple shortcuts for a while while only documenting the variant in our onboarding and documentation.
Edited by Jakub Steiner