Is wisdom of the wall (shadow) bugged?

When you proc a flurry and it gives you the shadow damage wisdom of the wall buff, only 5-7 (usually 5 but have had 6 and 7 happen as well) of the flurry strikes will explode for the shadow damage, however if you already have the shadow damage wisdom of the wall buff up and proc flurry, all 10 strikes will explode. Is it intended to work like this? or is it bugged on the initial hit not activating 10 shadow hits?

Just curious how its supposed to work.

Shadow buff lasts 40sec unlike the others. It’ll fully benefit your next batch of strikes usually. But yes, if you get a partial flurry it might activate wisdom in the middle of a barrage instead of the end and produce funny numbers.

None of my tests were a partial flurry, all were 10 stack, the initial buff giving 10 stack flurry will only explode 5-7 times instead of 10.

Reason why I consider it may be a bug is because of numbers being random, while its usually 5 I’ve seen 6 and 7 in my testing, which made me think it wasn’t intended.