When casting a spell and your character can't see it getting interrupted is getting extremely frustrating. Even with clear line of sight if the mobs strays from the center of my screen I get spells interrupted. If a mob runs past me and I'm mid-spell I get interrupted. It is extremely annoying and needs to be addressed.
If I have clear line of sight, even if my screen isn't looking at the mob, my spells should go through.

In a fate this morning an archer was kiting a mob in circles. I dare say 75% of my spells got interrupted because the archer was moving. I was targeting the mob chasing her, but the principle is the same. I had clear line of site the entire time, but because she was moving my spells were constantly interrupted.

To me, this is a bug. It should be looked at. Please look at this issue! It is very frustrating.
Thank you.