I think this is more an oversight than a bug, unless I'm missing things. The Untested Jetpack item is a single-gear, 50-scrap orange item, equippable at level 93, yet it's not available in campaign until Chapter 18, which requires level 106. I am currently level 102, my main heroes are at orange+3 and able to equip all items, except my Aquaman is stuck at orange+2 because the only way to get Untested Jetpack scraps is through the Boss Pit (and is that even available at my level?)
This seems like a mistake. Shouldn't Untested Jetpack be STARTING in Campaign chapter 15 or 16?