Is there an existing issue for this?

• I have searched the existing issues

Observed behaviour

Encountered in MC Eternal, but was replicated in a less populated instance.

Extension Spell does not Discover or go on Cooldown when cast.

Expected behaviour

Extension Spell to go on cooldown.

Steps to reproduce

1. Install EBWizardry and Ancient Spellcraft
2. Equip Sage armor and get Sage Tome
3. Apply Potion Effect to self (and potentially other targets, only self was tested properly in my scenario)
4. Cast Extension spell
5. Does not go on Cooldown, can be indefinitely recast for endless effect duration

Crashlog

No response

Environment (Singleplayer/Server, etc.)

Singleplayer

Mod version

1.5.5

Forge version

14.23.5.2855 / 14.23.5.2860

Other mods

EBWizardry 4.3.8
Blood Magic 1.12.2-2.4.3
ChanceCubes 1.12.2-5.0.2
CraftTweaker 1.12-4.1.20.679
Guide API 1.12-2.1.8
JEI 1.12.2-4.15.0.293
Modtweaker 4.0.18
MTLib 3.0.7
Redstone Flux 1.12-2.1.1.1
Simply Jetpacks 2 1.12.2-2.2.14.67