Question Cubemap in URP shader graph looks yellow

I have a shader which projects a skybox texture onto an inverted 3D sphere. The HDR Skybox node connects into a Sample Cubemap node, and the intensity is currently being handled by multiplying the Sample Cubemap node by a Vector1. However, the cubemap appears yellow when in play mode. It looks oversaturated or something.

The cubemap itself works fine (I've tested it by using it in a Skybox material), but when I try to use it as a texture in a shader graph it doesn't work. Can anyone give me any tips or advice on whether this is possible to fix?