Question Texture + Position not allowed: Not sure if this is a bug

Hi I am having problems creating a shader with graph and there is something that definitely you can do in code, so I´m not sure if it´s a bug or not.

The idea is that I want to create a shader that displaces the shader based in a texture, but for some reason I cannot mix the sample of the texture and the position and then assign to the position in the PBR Master.

Here are some images are a good example of my problem:






I´m not sure if there is any kind of types implicit, if I can do a conversion or if is just a bug as I said.

I am working on LWRP and 2019.1.8f1 and I´ve tried a few things like:
- Create a new material
- Restart Unity
- Add Intermediate nodes (split->Vector3->..., Transform...)

Without any result,
Thanks for the help!

 

Ok, solved I have to use "Sample Texture 2D LOD" instead "Sample Texture 2D"