Since the last update, why bother using stealth anymore? The ability is useless now.
Are spies also affected? Spies undercover are the only way they are useful at all.
If they are spotted they will never put a merc in range of them and they are easily ranged out.
It would make the unit completely useless.
Also it is a bit annoying that native scouts can be uncovered by villagers at which point they auto attack making it perfectly clear to your opponent where it is.