I just recently switched to PC from ps4 and level boosted my hunter with the free one I got for buying the game bundle. I found that I cant get small gifts from dreaming city activities and I cant get rare shaders from dismantling weapons and armour. Not sure if the level boost is causing this issue but thought it worthy to note.
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Nope. Rare shaders only have a chance to be given when dismantling items with it. The gifts are also a random drop from various DC sources.