Guild Wars 2

when i use p/d with ricochet and sneak attack or AA the bleeding is bouncing between targets so if sneak attack does 5 stacks of bleeding it can do couple more to another target
from my experience it did 2-4 more stacks to another target

but when i use venom i would expected that skale venom which give 3 strikes will do the same to another target but when i tested it the max was 3 stack which spread over 3 targets and not like sneak attack

if i am not clear lets say

sneak attack did → first target 5 stacks , second target 2-4 stacks , third target 1-2 stacks

while venom → first target 1-2 stack, seconds target 1 stack, third target 0-1 stack

so why is that and is this bug?

That is the way venom works, if the venom say next 3 hits will apply X, then the next 3 hits you do will apply the venom regardless if they are to the same taget or to various tragets, it count each hit, not each attack. In the case of ricochet if one bullet hit 3 targets then each of the targets will take one of the stacks of the venom (if you are using skale venom for example). Same happens if you are using the shortbow auto attack, the stacks of the venom will dimish for every foe the arrow hit.
In the case of sneak attack the bleed spreat out because there is not a limited number of stacks but is the normal attack that apply the bleeds no matter if it hit one or five targets with the sneak bulle, so if five bullets hit the first target and you are super lucky and all of then ricochet to a second target, the second one will get the same amount of bleeds that the first.
So yea, ricochet rocks, but not with venoms.

Venoms are kitten. Welcome to gw2.