After 1.20.4, tipped arrow projectiles no longer use the respective "tipped_arrow.png" texture, instead using the regular arrow texture.

Here, I have used a resource pack (provided) that changes the tipped arrow texture to be entirely red for demonstration.

As you can see, in 1.20.4, the tipped arrow is red as expected.

However, in 1.20.5 and onward, using the same resource pack, the arrow simply uses the same texture as regular arrows.