The text in texemeshpro is invisible or purple in MR mode with world space’s canvas
Non shader graph shader 'Shader Graphs/TextSDFSmoothstep' not supported or MaterialX encoding missing
This tends to be because of a failure to export the converted (MaterialX) shader graph. We have a note in the FAQ about it (basically, try reimporting the Packages/PolySpatial/Resources/Shaders/TextSDFSmoothstep shader graph).
Thanks, it works after reimport.