Buff "Ghost Dance" doesn't build stacks on second Weapon Set.

Ranger running Ghost Dance and Wind Dancer. I have two Weapon Sets set up that I switch between. Ghost Dance has a problem stacking up the Ghost Shrouds on the second weapon set. Whatever Weapon Set I am on, it will initially start building the stacks up until maximum. When it reaches the maximum stacks of Ghost Shrouds it stops building stacks on the both Weapon Sets. Like it reached a counter for the ability, but doesn't check after switching the Weapon Sets.

Steps to recreate:
1. Have two Weapon Sets set up.
2. Have 100 Spirit and Ghost Dance, Wind Dancer and Plague Bearer active.
3. Wait for Ghost Shrouds to build to maximum.
4. Switch Weapon Sets.
5. No stacks are building up.

This can even be done with a few stacks already built:
3. Wait for Ghost Shrouds to build like 2-3.
4. Switch Weapon Sets.
5. Stacks start to build up.
6. Once one of the weapon sets reaches maximum stacks, the other will stop building them.

To add - it starts working if you turn the skill off/on again on the second weapon set, though the other set will now stack to one less than maximum stacks. Vice versa if you turn weapon set 1 on/off.

spent hours trying to fit ghost dance into my build and I'm having the same issue, it doesn't work