So they changed Shizune's Passive from muted to suffering debuffs, but I did some testing with poision and the damage over time does not change when Shizune's in the field. When going against Kakashi, I used poision fog from water main and the DoT was 1,999 from one stack. When I doubled the stack with using both shizune's and water main's poision fog jutsu, the damage was 3,998 (1,999 x 2 = 3,998). I took shizune out and used water main's poision for jutsu and poision tai and got the same results.
Anyone got an explination for this? I can have video evidence tomorrow. I'm not dealing with editing and youtube tonight. I have to go to bed.