Clearly Line of Sight should block us from targeting other players, however Icon's placed on yourself or others should not. If you center your target reticle above your head, its very nearly targeting your own head, and sometimes as you move your characters around, the movement animation will place your head or shoulders in the way for your target reticle and block you from actually casting a skill at your target. This needs fixed. I'm playing on a PS5, not sure if the problem is the same on all platforms.
For the few years I've been playing mag sorc, I decided to pick up the class again when it was super garbage, because I thought when ZoS finally buffs this class I'll be good at it. lol Targeting is wonky, sometimes I'll have my target reticle directly on a target, but my skills will be hitting something much closer, but not directly targeted by the reticle. I'm guessing its a problem for all ranged targeting and not just the Destruction Staff.