BTW, it is fully possible that I never tested inxi with sway… 
Try quotes around each option, e.g.
inxi "-Fa" "-z"Or maybe sway is interpreting -F somehow?
No it has something to do with the a after F. If i use inxi -Aa is fine or inxi -Ga It’s only inxi -Faz or any other combination with -F.
Edit: I’ll just leave this unresolved for now. Maybe eventually it will fix itself.
Try sudo -E inxi -Faz
Same thing happens.
That rules out the sway not liking root applications issue…odd one.
I haven’t tried it on any other desktop?
Edit: Seems fine on Plasma.
If i use a capital A then all is fine.