Nah it’s fine that spell like arrows, spirits, spears, fb etc go after 16:9, it’s travelling spell/skills. They are important in pvp (like bow vs bow for example).
The problem is that it should not be possible to aim opponent from that far.
To resume, visual limit should be set (like fog of war, black bars in worst case …) after 16:9 (imo.).
Environnement can be shown (and it will be beautiful) but not players/opponents/monsters/item drops.
I know, but in PvM the advantage from that is really small. You can also hit things offscreen with 16:9, it is yet again only the additional information from an ultra wide screen. And this information can be crucial, e.g. for seeing drops, but not for skills imo.