Salient 8.5.4 is Now Compatible with Woocommerce 3.3.1 . Kindly update the Theme if you have updated Woocommerce . 

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Move Third level menu to left instead of right

Add this into the Custom CSS box located in your Salient Options panel:

body .sf-menu li li ul {
    left: -16em!important;
}
body .icon-angle-right:before{content:"\f104" !important;}