[Mobhack]

If the message delay has been set extremely short, then the original poster may not be seeing the "Rifle section takes cover" etc messages.

Infantry which succesfully take cover (as opposed to simply hitting the dirt) can break spotting. Both reactions can break the "chain of fire" from the firer.

You will sometimes reacquire if you select another unit and look at the spot, or the same vehicle sometimes, e.g. if you rally it up a bit so it's spotting better due to lowered supression level.

Cheers
Andy