Phrecia scarab mod bugged

The mod '#% increased chance for Unique Monsters to drop Scarabs' seems bugged as well. I stacked it up to 800% and ran Glacier maps with Exiles, but they dropped zero Scarabs. It feels like the modifier isn't applying at all.
A small bump plz GGG fix it its a small event don't give up on poe 1 league after 1 week like keepers
Bump
I did a small test of this, 10 maps of my full scarab idol set (not optimized), and 10 maps without the mod in question. I averaged 60 scarabs per map with my full idol set, and 16 scarabs without the "Rare Monsters in your Maps have (40—60)% increased chance to drop Scarabs per Monster Modifier affecting them" mod. It seems to at least do something. I made a reddit post that includes my raw data.

https://www.reddit.com/r/pathofexile/comments/1r8m5nv/a_short_test_on_atlas_and_map_scarab_modifiers/?

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