The Bug

This is directly related to MC-257341

In 1.19.3 Pre-1, a bug was fixed where the Vex's new texture didn't utilize translucency for its lower torso; the tattered looking ghost tail that Allays have which is also translucent. However, there are still small, subtle translucent areas in the Allay's wings that the Vex's texture does not utilize. The tips of Allay wings have a few transparent pixels, as can be seen here:

It's a very minor inconsistency, but if the Vex texture is meant to truly parallel the Allay's it makes sense, especially since the Vex now also has transparent parts too. I would assume this is just an oversight, as it's a very easy one to make.

-----------------------------------------------------------------

Steps to reproduce:

1. Summon an Allay and Vex next to each other with no AI
2. Compare and contrast their wings. Although Vex have a transparent ghostly torso, their wings don't have transparent tips
3. Double check this in their texture files; the texture simply just does not have transparent pixels on the wings