As the title says. Anyone able to explain to me like a particularly slow child why all of a sudden my rendering view with lights, etc... come out as blue and pink, whereas the material preview mode is correct?
Oh now I understand, the rendering is blue. Perhaps you should check if all textures are correctly setup and if the correct color space (RGBA / Non-color) is selected for different type of PBR Textures. Those things can be interpreted differently in render and preview.
But in the end I think you will have to try a loot of thing until you found it.