exclude xs from @include media-break-point-up

src/client/styles/scss/_on-edit.scss

@@ -31,14 +31,11 @@ body.on-edit {
 
   .grw-page-path-nav,
   .grw-page-path-nav h1 {
+    width: calc(100vw - 300px);
     overflow: hidden;
     text-overflow: ellipsis;
     white-space: nowrap;
 
-    @include media-breakpoint-up(xs) {
-      width: calc(100vw - 300px);
-    }
-
     @include media-breakpoint-up(md) {
       width: calc(100vw - 350px);
     }