It’s typical behavior of the 2nd XHP emitters–the phosphor pour extends way past the die, so the blue light emitted sideways has to pass through a lot of phosphor and turn very yellow. The result is angular tint shift much worse than first-gen domed emitters. The only ways to deal with this without modifying the emitter are heavily diffused TIR or a very deep (relative to diameter) reflector, but we are getting none of them.
It’s only excusable given the light is an older model, nowadays the 3rd generation domeless emitters are widely available.
1 Thank