Questions

[rel19]

I mean the case when I force a crew to get out of vehicle with keyboard @ key.

First I noticed this when AI began to pound abandoned vehicles with all tubes of artillery. AI could not spot and see them normally because that vehicles were behind hills and trees and AI had not got LOS to them.
After that I made a PBEM battle test. There is no LOS but all vehicles become visible to enemy after turn transition if unload crew.