It is intentional. It's caused by `funnyButton` function which after beautifying looks like this.

            funnyButton() {
                document.addEventListener("mouseover", e => {
                    if (e.target.closest(".chefcookie__button--settings")) {
                        if (window.innerWidth < 1e3 || r.default.isTouch() || r.default.isMobile()) return;
                        if (!0 === this.funnyButtonStop || !0 === this.funnyButtonAnimation) return;
                        this.funnyButtonAnimation = !0;
                        let e = document.querySelector(".chefcookie__button--settings"),
                            t = parseInt(e.getAttribute("data-mode") || 1);
                        e.setAttribute("data-mode", t % 2 + 1), setTimeout(() => {
                            this.funnyButtonAnimation = !1
                        }, 550)
                    }
                }), document.addEventListener("click", e => {
                    e.target.closest(".chefcookie__button--settings") && (this.funnyButtonStop = !0)
                })
            }