Diablo 4 Update Backfires, Nerfs Players' Glyphs Amid New Endgame Challenge

Blizzard scrambles to fix bug that weakened players' builds, while new Abattoir of Zir challenge draws criticism for excessive grind.

Diablo 4's latest update, patch 1.2.3, introduced a new endgame challenge, the Abattoir of Zir, but also accidentally nerfed players' Paragon board glyphs, impacting their builds.
The update was intended to increase the amount of XP players earned for their Glyphs in Nightmare Dungeons, but a bug ended up reducing players’ existing Glyph levels.
Blizzard is aware of the issue and is working on a fix, with the PC update expected on December 6, and the console hotfix to follow later due to certification processes.
The new Glyph added alongside Abattoir of Zir, Tears of Blood, requires significantly more experience to upgrade, leading to concerns about the time required to fully level up the Glyph.
Players have reported that the Abattoir of Zir is not so much difficult as it is a lengthy grind, with luck playing a significant role in progression.