I assume that you are talking about using the Texture color mode in the Solid viewport shading settings:
This mode is not very sophisticated. It works like this:
If you have an active image texture node in your object’s material, the viewport will use it for shading.
The texture is mapped using the active UV map for the object.
All other aspects of the material are ignored.
This means that if you use nodes to combine information from multiple textures or to alter the texture mapping in any way, those details will not be reflected in Solid mode. This makes the Texture color mode not particularly useful for all but the simplest of materials.
Generally, I recommend not bothering with textured display in Solid mode. Just use the Material Preview mode to get a textured preview of your model. That’s what it’s there for.