I've setup a map with both a scene view and a map view. I'm using a proxy, that works for the 2D map view with no issues.
Switching to the scene view produces the following error:
Uncaught SecurityError: Failed to execute 'texImage2D' on 'WebGLRenderingContext': the cross-origin image at : https:\\<serverurl>
javascript - Three.js and loading a cross-domain image - Stack Overflow
Looks like a possible bug with the way the ESRI JS API requests the image? Anyone else having this issue?