my arcanist is getting other class drops in Infinite Archive.

Quethrosar

I have not filled the sticker book on my arcanist class set but i get other class drops for the class sets.

NoxiousBlight

Drops are not 100% curated. Certain bosses only drop weapons, others only drop armor.

So if you have all the armor for Arc you will get armor for other classes, if you have all the Arc weapons those bosses will drop weapons for other classes.

fizl101

Armour drops on odd arcs, weapons on even arcs. If you have collected all the weapons or armour for your class u will get other sets on the relevant arc

Quethrosar

Holy crap ....