It seems its probably more of a shell thing, than a linux thing. I've never run into this as an issue before, but I would wager it's the "Save" muscle memory which unexpectedly causes this issue for some people.
Oh yeah the save muscle memory is burned into me too, despite having save-on-blur enabled for the last decade. More wondering under what context ctrl-s is having an effect on shell, and what that effect actually is. Is it bg/fg shenanigans?