Hey Jarutosurano,
I’m sorry I’m not replying with a solution. I’m also having the same problem. It was never like that before then I guess woocommerce updated itself and now it’s displaying all possible variations even though I didn’t create them. What makes it worse is your post is the only thing google found when I went looking for other people with the same problem.
This really does make for a bad user experience. Especially being that I have 2 attributes with MANY options.
Any one out there with a solution?