Naming tools, weapons, and armor cause repair price to be too expensive

When i named my sword Clarent, the repair price became too expensive. I have replicated the sword in a test world and the result was the same.

What I expected to happen was...:
I expected to just name my sword Clarent and be able to repair it when in need of repairing.

What actually happened was...:
When the sword was named Clarent, the price for repairing the sword went from 32 levels (which is pretty expensive for these snapshots) to "too expensive."

Steps to Reproduce:
1. Get a diamond sword
2. Put the following enchantments on that sword:

• Unbreaking III
• Looting III
• Sharpness V
• Knockback II
• Fire Aspect II
  3. Name that bad boy "Clarent"
  4. Attempt to repair "Clarent" in survival mode.