PvP Seize bug? Abilities effect always displaying

For various reasons I always have abilities visual effect for teammates and others turned off in my options, making it so that the only effects going off on my screen are my own; but I've noticed (and it's kind of hard to miss) that during Seize matches, I can see every players spell/cast/ground aoe on my screen.
And as much as it can be useful, I'd rather avoid seeing those giant columns of white from smn covering my screen when I'm trying to keep my party alive and actually be able to see what is going on around me, and also keeping my fps above 10...

tldr Bug or not? All abilities visual effects are displaying in Seize for every players despite always having them turned off.