Possible related issue:
#21
Here bug is different, but also related to book slot.
MC 1.21.1 Neoforge 21.1.219
Required mods:
accessories-neoforge-1.1.0-beta.53+1.21.1.jar
accessories_compat_layer-neoforge-0.1.12+1.21.1.jar
curios-neoforge-9.5.1+1.21.1.jar
geckolib-neoforge-1.21.1-4.8.4.jar
irons_spellbooks-1.21.1-3.15.4.jar
owo-lib-neoforge-0.12.15.5-beta.1+1.21.jar
player-animation-lib-forge-2.0.4+1.21.1.jar
Steps to reproduse:
- Create a new world in creative mode
- Create Ironbound Book from irons_spellbooks
-- Here irons_spellbooks may trigger advancement related to Ironbound Book
- Place it to hotbar, right click to wear
-- Here (on wear) irons_spellbooks must trigger second "Magery" advancement
But this happens only if remove accessories_compat_layer