Target out of sight

Have you ever experienced to cannot target certain enemies while they remain on stairs? (It happened to me with Leeches in Wanderer Palace.)

And how about the final boss in Amadapor Keep? I really find in that fight the targeting system to be the most fearsome enemy.

First af all, the target on the boss is ... his butt. Well, ok ... that's not the point.
Point is, if the giant boss is 80% visible, with his ass partially behind the little column, you won't be able to target him ... ù_ù ...

Plus, as a summoner, sometimes the Egi for no reason goes on the other side of a column, and not seeing him anymore (in a direct way) you can't cast power-up spells like Rouse on him ...

I think these things should need a fix (while the stairs being probably a bug, you must be able to target a huge thing with the 90% of his body visible; or to cast a spell who doesn't need a target like Rouse on your pet when you know he's up and alive near to you).