Versions:

• Enigmatic Legacy: 2.25.0
• Curios API: 1.18.2-5.0.9.2
• Patchouli: 1.18.2-71.1
• Forge: 40.2.21

Description of a Bug:

After you have read a tome with one username, if you change your username you can read it again.

How to Reproduce:

1. Read a tome with one username.
2. Change username with Mojang.
3. Read the same tome again.
4. Behold!

• Please note, I am unable to reproduce this bug as the only reason I found it is because I changed my Mojang username. This bug was found on a multiplayer server.