I am quite new here and struggling to figure out why there are two places to control shading, and how to switch which one actually controls the shading. Also: what is the semantic difference between "material properties" and "shading" from blender's point of view?
Layout tab > Properties > Material Properties > Material > Surface > Use nodesthis one works, but here I am able to use a single node only
Shading tab > Shader editor > ObjectI see a number of cool tutorials on how to use this one with multiple nodes. However, changing things here has no effect on the object shading. I clearly see that it refers to the object of interest "backsplash", still no effect.