The closed eyeblossom to gray dye recipe is not grouped with the other gray dye recipe

After picking up eyeblossoms for the first time, I checked my recipe book and realized that the recipe for gray dye using closed eyeblossoms was not grouped with the recipe for gray dye using black and white dye.

Steps to Reproduce:

1. Grant all recipes:

/recipe give @p *

2. Open recipe book
3. Find the gray dye from black/white dye, and gray dye from eyeblossom recipes

Screenshot: