Hi there,

Thank you for reaching out, and I apologize for any inconvenience caused by this oversight. Add this css code inside the custom.css file or template settings custom code box > CSS box.

.offcanvas-menu .offcanvas-inner ul.menu>li.menu-parent>a>.menu-toggler, .offcanvas-menu .offcanvas-inner ul.menu>li.menu-parent>.menu-separator>.menu-toggler {
    color: #fff;
}

Best regards,

Toufiqur Rahman (Team Lead, Support)