I updated this custom css code to fix that issue already:
.t4-megamenu .dropdown-menu li>a, .t4-megamenu .dropdown-menu li>.nav-link, .t4-megamenu .dropdown-menu li .dropdown-item {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
-webkit-box-pack: justify;
-ms-flex-pack: justify;
justify-content: space-between;
}