YOU should get up to 7 sentries with custom engineering + Windforce with 2 extra Sentries + Rucksack with 2 extra sentries, You only get 5.
What you’re seeing there is the legacy 2.7.1 Bombardier’s Rucksack secondary affix (without Cluster Arrow damage%) before Marauder’s Cluster Arrow was added in 2.7.2. There are a few legendary items suffering from that as mentioned in another thread.
Not a bug, sadly. You can’t wear an item and have it cubed and double dip on the bonus. Same with Legacy items and new items don’t mix either.
I might be wrong but the most sentry you can have up at a time is 3. I might be wrong again but once you place 3 sentry. Then you can place another one it removes one of the 1st 3 you place.
Bombardier’s Rucksack give you 2 more - and it is recommended for Marauder as your damage scales with nr. of active Sentries.
As mentioned before 2 more sentries on Windforce and Rucksack will not stack, as having Rucksack on your toon and it’s power in the cube wouldn’t stack either.
See I never really play the Manarder set other than doing the set dungeon. Like Zurtle said you can’t double dip. That is how the games works. It is like if I have Hungering arrow damage on quiver and have hungering arrow damage on my bow. What ever is the better damage of the two. That is is the you going use. You will not get both sorry. They did this so you can use another quiver if you want.
Just to be clear:
- The Demon Hunter gets 2 Sentry stacks with the Sentry Skill.
- With the Custom Engineering Passive Skill they get 1 extra stack for a total of 3.
- With the Bombardier’s Rucksack Quiver they get 2 extra Sentries. (Not stacks).
Note: A Demon Hunter NEVER gets more than 3 Sentry stacks. A properly geared Marauder’s build must lay down 3 Sentries, wait for their stacks to recharge and then they can lay down 2 more Sentries for a total of 5. After that, laying down a “6th” Sentry will remove the first one, repositioning it.
@Zurtle and @MadTom are correct. The item Powers dont’ stack.
This is NOT a bug.
To clarify this further. The OP is wearing the Bomb Sack and an Ethereal with the legacy bomb sack power and expecting them both to function which is not as intended.
For the same reason you cannot wear a Dawn and an Ethereal hand bow with the Dawn power and get both cooldown reductions off Vengeance. Or a Ballista and Ethereal with Ballista power and get up to 6 on shield.