Zac's E bug?

Well, I was trying to play Zac, one of my old favorite tanks last season, and...his E indicator changed it seems. I use smart casts, but sometimes I hover over the ability to see if I can hit it at max range. Well they either changed it or bugged it for zac, so now it doesnt show it's max range, making ganks a bit harder to set up on him and such. I'm just curious if anyone could tell me if it's intentional or not.