app/assets/stylesheets/spree/backend/shared/_tables.scss in solidus_backend-1.2.3 vs app/assets/stylesheets/spree/backend/shared/_tables.scss in solidus_backend-1.3.0.beta1

@@ -51,10 +51,11 @@
         display: inline-block;
         padding-top: 6px;
 
         &:before {
           text-align: center !important;
+          padding: 0;
           width: 27px;
           display: inline-block;
         }
 
         &:hover {
@@ -132,9 +133,10 @@
       padding: 10px;
       border-top: 1px solid $color-border;
       border-bottom: none;
       background-color: $color-tbl-thead;
       text-transform: uppercase;
+      text-align: center;
       font-size: 85%;
       font-weight: $font-weight-bold;
     }
   }