Programmer Art still uses black box around text in world loading screens

The bug

In Programmer Art, a black box is displayed around text when creating or loading worlds. This was likely implemented to make text stand out better against the panorama, however is not needed in Programmer Art, and its presence clashes with this resource pack's purpose (to make the game look how it did previously).

How to reproduce

1. Set your current resource pack to Programmer Art
2. Create or load a world
3. Observe

Expected results

No black box, just like it used to be.

Actual results

It's there for some reason.

How to fix

Should be simple enough - just make the texture file used for this box fully transparent in Programmer Art.