I do not know if this has been reported already but lately I have been having an issue with the hardwired GS backpack talent working properly. For some reason after a skill is used the backpack talent will cooldown within the ten second mark then disappear and the chestpiece GS talent will show active even though I am not currently wearing the HW chest piece. Other times the Backpack talent will disappear and neither GS piece talent will show active. I notice this issue mostly when using firefly as skill 1 and a reviver hive as skill 2. This problem also causes me to lose the backpack ability until the next skill is used before it begins to cooldown again in which it will AGAIN disappear repeating its inability to work.
This is a known issue to most people that use gear set items.
Every gear set in the game has a bug or issue in one way or another. Well besides aces and eights but that might be because it isn’t used that often to find bugs (my own opinion)
Personally I don’t use gear sets due to the perks not being enticing enough to sacrifice attributes and talents just to use a gear set but that is my opinion. Some might agree or disagree but until they actually work out the bugs in the gear sets I won’t be using them.
Sorry you are experiencing the bug/issue with the hard wired gear set. Sadly it was reported a while back and has been passed along to the devs but they have fixed it yet