So you're telling me it is intentional? How I did not notice it before and now I see it all the time? I'd understand maybe 10 seconds before wounded unit dies and loses sight but come on.. How can this be intentional? I don't know.. At least units should target them automatically then.
It is intentional. It was in the first game, too. "Wounded" guys could reveal cloaked units.
The "Interrogate" ability for Ostheer units with G43s relies on the existence of crawlers, so I don't think auto-targeting will happen.
(stolen) racketenwerfers will automatically target wounded soldiers. That's probably a bug.