[SSE] Fix icon set combobox in dark style

apps/common/main/resources/less/combo-border-size.less

@@ -57,4 +57,18 @@
     .form-control:not(input) {
         cursor: pointer;
     }
+
+    li {
+        img {
+            -webkit-filter: none;
+            filter: none;
+        }
+
+        &.selected {
+            img {
+                -webkit-filter: none;
+                filter: none;
+            }
+        }
+    }
 }

apps/spreadsheeteditor/main/app/view/FormatRulesEditDlg.js

@@ -229,7 +229,8 @@ define([ 'text!spreadsheeteditor/main/app/template/FormatRulesEditDlg.template',
                 editable    : false,
                 cls         : 'input-group-nr',
                 data        : cmbData,
-                takeFocusOnClose: true
+                takeFocusOnClose: true,
+                scrollAlwaysVisible: false
             }).on('selected', function(combo, record) {
                 me.refreshRules(record.value);
             });