Would love to hear STS's explanation for this. Its true that vials were extremely underprice and to fix this the drop rate should've been a bit more rarified but a 0% drop rate is a bit overkill.
There are even rumours circulating that vials aren't lootable from arena chest on an endgame character (lv 61). And to loot vials one must farm on a lower lvl character. Just rumours of course, this hasn't been confirmed by any devs.
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