Hi @karakusc, sorry for a late reply.
After you click Apply on the UVEditor that object will have so called custom object mapping
Surface, polysurface and SubD objects that have custom object mapping use Advanced texture preview in order to preview the mapping correctly. Advanced texture preview uses texture baking which in many cases lowers the texture resolution seen on the object.
If your object has only one mapping channel and you define a texture to use channel other than 1 then the result will be undefined and depends on the display mode or renderer. In this case it appears that Advanced texture preview gets disabled for that object because the mapping channel 2 assigned for the texture does not exist. I encourage to avoid that trick because it may break your model in any future Rhino update.
I suggest you try one of these:
- Apply your texture using cylindrical mapping
- Add your ornament to the object using a cylindrically projected decal
- If neither of the above work turn Advanced texture preview off temporarily from the display mode settings. Remember to turn it back on or you may experience other more severe texturing issues with other models.