app/assets/stylesheets/materialize/components/forms/_input-fields.scss in materialize-sass-0.100.0 vs app/assets/stylesheets/materialize/components/forms/_input-fields.scss in materialize-sass-0.100.1

@@ -93,9 +93,20 @@
 
   // Form Message Shared Styles
   & + label:after {
     @extend %input-after-style;
   }
+
+  // TODO: Remove once input fields are reworked to support validation messages better
+  &.invalid + label:after,
+  &.valid + label:after{
+    display: none;
+  }
+
+  &.invalid + label.active:after,
+  &.valid + label.active:after{
+    display: block;
+  }
 }
 
 
 /* Validation Sass Placeholders */
 %valid-input-style {