Knockout (Remix) Challenge Issue

Smolpotatochan

This challenge is not progressing. I select it and when I get in game, it shows the same perks I was using before selecting this challenge and when I knock survivors down, it does not progress. I have deselected and reselected the challenge multiple times, have restarted the game, and even deselected all my previous perks so there's nothing selected but it's still not working. I'm wondering if the mini perk preview is causing an issue? But I don't know how to turn it off. As you see in the image, it has my perks in the main perk tab hidden, but you can still see my old used perks in the mini perk preview to the right of Artist.