Translations (JP to English)

[Zetsumei_Tsunarashi]

Regarding this one where the spell doesn't go off after spell casting is complete when target is defeated. We have no plans of changing this in 2.0 also due to the following reasons
移動するだけで詠唱が中断されるため詠唱キャンセルが容易 - You can cancel casting easily by moving
対象が倒された結果、魔法が発動しなくてもMPが消費されない - When the target is defeated for that result even if the spell doesn't go off the MP isn't used
魔法詠唱時間を除けばコストがかかっているわけではない - Aside from the casting time there isn't any cost involved

Sorry, I hate to comment in this thread but I have to say something about this.

I think dev is not understanding what the player's issue is. This is disappointing as this is a big issue for me that I hope will be addressed in the future. So I want to make sure dev understands the problem, and I'm wondering if JP has made a similar response in the thread.

Basically the problem is when you are fighting a large group of enemies and try to use AoE spell to damage the whole group, even if one of the enemies is defeated you can't damage the other ones that are still left alive because your spell is cancelled. Would be easier if the spell just went off anyway so that you can damage the other ones too without having to target a new enemy and recast the spell all over again.

Sometimes your party can go through an entire group of enemies before you ever get the chance to use your spell, because you had to keep recasting it every time one of the monsters dies. You waste a lot of time and lose DPS because you have to recast the spell.

I hope dev understands this is an issue and finds a way to address it.