yes, those 2 were combined/technically 1 issue, she wouldn’t spawn her Wrath of the Aether “nemesis” version after 1.2 (Ult WotA version only added in 1.2) so she couldn’t drop it at all as it was now tied to ult version.
She could drop it before 1.2 and since the corrected spawn version of that hotfix. But that’s a pass fail/“100% unable to drop/able to drop at all” interaction, not a “drop rate is supposed to be 10% but takes 50+ to 100 kills” type weird rng relation 
*the thing i’m referring is not a technical bug, more like a “joke” about RNGesus being weirdly picky about Anasteria’s helmet, for some reason, - so you just gotta “keep at it” if you’ve killed her 20times on ult and it still hasn’t dropped