Scene.environment HDR, but it's at the incorrect rotation/offset, and can't adjust

Questions
1

Apply the scene environment, works!

  new THREE.RGBELoader().load(_G.SCENES[_G.SID].hdr, ( texture )=>{
      texture.mapping = THREE.EquirectangularReflectionMapping; //THREE.CubeReflectionMapping; //THREE.EquirectangularReflectionMapping;
      this.hdr_map = texture;
      this.scene.environment = this.hdr_map;
      texture.dispose();
  });

And trying to rotate it with dat gui has no effect:

  this.gui_hdr_texture_rotation = f.add(this.settings, 'hdr_texture_rotation', 0, Math.PI*2, 0.001).name("hdr texture rotation").onChange((val)=>{ 
      if('hdr' in _G.SCENES[_G.SID]){
          _G.MYTHREE.scene.environment.rotation = val;
          _G.MYTHREE.scene.environment.needsUpdate = true;
      }
  });
  this.gui_hdr_texture_offset = f.add(this.settings, 'hdr_texture_offset', 0,1, 0.001).name("hdr texture offset").onChange((val)=>{ 
      if('hdr' in _G.SCENES[_G.SID]){
          _G.MYTHREE.scene.environment.offset.set(val,0)
          _G.MYTHREE.scene.environment.needsUpdate = true;
      }
  });

Any idea why both rotation/offset has NO EFFECT?

Additionally, what is the relationship between RGBELoader and PMREMGenerator. Sometimes they are used together and other times not.

2

As far as I’m aware this functionality has not yet been integrated into the library… CubeTexture orientation · Issue #16328 · mrdoob/three.js · GitHub there are workarounds on other questions related in the forum though