My Sherman can target straight though this strangely passive (why doesn't it flee?) gun-out Panther when it is behind it (B) but the Panther blocks LoF when the Sherman is abeam of it (A). A bit odd/counter-intuitive.
Just to clarify, the Panther will be hit by shells fired when the Sherman is behind it and targets a spot in front of it. The weirdness is the fact that the game allows me to target an out-of-LoS spot in one situation (B) but prevents me from doing so in another (A).