What is this following my cursor and how do I get rid of it?

Please… How do I get rid of it, I’m losing the plot! It follows my cursor everywhere!!!

What’s following your cursor? It’s not obvious in the image. Is it the lighting?

No, it’s the coloured lookalike rubix cube with the 4 spheres on top!

Try to press-depress left mouse click, right mouse click, middle mouse click while also pressing-depressing Ctrl, Shift, and Alt. That will reset your keyboard state. That happens sometimes to me too as if I’m dragging the object with Alt+mouse click when I’m just actually pressing Left-Click.

It’s not an object, that’s the thing, I have no idea what it is or how it appeared, but it doesn’t appear in-game. Looks like something related to materials but I have no idea what!

(Also I tried your suggestions, none worked!)