This issue may complicate other issues where spotting problems are being investigated, because the vehicles may actually have seen the enemy, but have a weapon unsuitable to engage it selected until the hull is pointed towards the enemy, muddling the issue.
Sample Mission (Vanilla, Dev, Altis) here: https://drive.google.com/open?id=0B9U3xtNMOp_8NGZLekc4V1l3M00