Blizzard recently released Patch 1.2.3a which came with various bug fixes. Among these was a change to the Tears of Blood Paragon Glyph's tooltip which now displays the damage bonus as being multiplicative instead of additive. However, the patch also changed the increment value at which the Glyph increases its damage bonus at every level up.
Diablo 4 Patch 1.2.3a — Paragon Glyph Issues Fixed Abattoir of Zir Tips and Tricks
The undocumented change that came with Patch 1.2.3a changed the increment damage bonus values for the Tears of Blood Glyph which was introduced with the new Abattoir of Zir endgame system.
Global Community Development Director PezRadar clarified that this change happened due to the original design of the Glyph being additive with other sources of damage and coming with the aforementioned +0.10% damage increase per level. While it only increases by 0.02% per level after the recent patch, this is in fact not a nerf to the Glyph due to it being a separate damage multiplier now.
The patch notes for Patch 1.2.3a only mentioned the fix to the