Merge pull request #16804 from edwinlin1987/fix/activeDisabledButtons

Show active buttons when form disabled

less/mixins/buttons.less

@@ -42,12 +42,9 @@
   &.disabled,
   &[disabled],
   fieldset[disabled] & {
-    &,
     &:hover,
     &:focus,
-    &.focus,
-    &:active,
-    &.active {
+    &.focus {
       background-color: @background;
           border-color: @border;
     }