Bug in drop horadric tomes and gems

Hello,
I’m experiencing a frustrating bug that is severely affecting my gameplay this season.
I have been trying to get the Horadric Tomes to learn the recipes for the Horadric Gems, but they are not dropping. I have completed numerous Vaults and defeated Astaroth multiple times, yet the tomes never appear.
This is not an isolated issue. Two friends I’m playing with this season—one on PC and myself on PS5—are also experiencing the exact same problem. This suggests it’s a bug affecting multiple players and platforms.
Could you please investigate this issue and provide a solution? It’s significantly hindering our progress and enjoyment of the season.