Dye duplication (with shulker box & exiting crafting menu quickly)

Might be related to MC-138075.

The bug

When you put a shulker box and a dye in the crafting menu, and you have more dye selected with your cursor, and you quickly exit the crafting menu, the dye becomes duplicated.

Notice that in the attached video, on the first try, the dye was not duplicated. But, on the second try, it was duplicated.