diff --git a/grunt.js b/grunt.js
index 524421be7..f43648870 100644
--- a/grunt.js
+++ b/grunt.js
@@ -299,8 +299,8 @@ grunt.initConfig({
 			}),
 			// TODO consider reenabling some of these rules
 			rules: {
+				"adjoining-classes": false,
 				"import": false,
-				"important": false,
 				"outline-none": false,
 				// especially this one
 				"overqualified-elements": false,
diff --git a/themes/base/jquery.ui.slider.css b/themes/base/jquery.ui.slider.css
index d0ee1a00d..e590a376c 100644
--- a/themes/base/jquery.ui.slider.css
+++ b/themes/base/jquery.ui.slider.css
@@ -28,6 +28,12 @@
 	background-position: 0 0;
 }
 
+/* For IE8 - See #6727 */
+.ui-slider.ui-state-disabled .ui-slider-handle,
+.ui-slider.ui-state-disabled .ui-slider-range {
+	filter: inherit;
+}
+
 .ui-slider-horizontal {
 	height: .8em;
 }