Relates to MC-129542.
As the Programmer Art pack is activated, the panorama in the background would be expected to show a scene utilizing said textures. This is not the case.
MC-140210
Title screen panorama uses new textures even when Programmer Art is active
Resolved
Works As Intended
2
As far as I'm concerned the panorama is a fixed picture... Its texture won't change even if you use other resource pack(s).