I attempted to complete the achievement “Completionist II” by getting 4x copies of each card in Thunder Junction Alchemy (Yes, I picked that one of all sets, ridicule me in the comments). it shows as being complete on the Set Progression page, but isn’t triggering in achievements.

I think this is because the achievement is relying on a number greater than zero to gauge completion (e.g. 1/2 returning 0.5, 2/2 returning 1.0, 0/0 being 0.0) Thunder Junction Alchemy has zero commons in the set, so my guess is that the achievement is written to see that as having 0% of the commons or an undefined amount since it’s trying to divide by zero.

Since they’re included in the set progression page, I’m assuming the alchemy sets could contribute to that achievement. Please advise if this should have triggered and if I was anywhere close to identifying the problem.