Describe the bug
Ancient tome will not upgrade enchanted books.

To Reproduce
Add a max level enchanted book and an ancient tome and make a same level enchantment :

ExpIt takes 25 levels off of you and the enchantment of adding the max level plus 1 doesnt work.

Screenshots
https://www.youtube.com/watch?v=4kqvxATE1_U

Info (please complete the following information):

• Modpack Version:
  • 2.77.5
  • 3.0 BETA 5
  • Other:
• Server or Singleplayer:
  • Server
  • Singleplayer
• Version the world was created on:
  • 2.77.5
  • 3.0 BETA 5
  • Other:

Additional context