Enable Polymer.Settings.useNativeShadow on the dashboard.

dashboard/dashboard/elements/autocomplete-box.html

Index: dashboard/dashboard/elements/autocomplete-box.html
diff --git a/dashboard/dashboard/elements/autocomplete-box.html b/dashboard/dashboard/elements/autocomplete-box.html
index d679ca9856d8b4a08faf3ef819a3411a0ab76e4b..493313b6488f93ebcb0c8fe01124396eee97cddf 100644
--- a/dashboard/dashboard/elements/autocomplete-box.html
+++ b/dashboard/dashboard/elements/autocomplete-box.html
@@ -144,6 +144,7 @@ property 'group' sets to the header item name.
                      on-focus="onFocusInput"
                      on-blur="onBlurInput"
                      on-keydown="onInputKeydown"
+                     on-keyup="onInputKeyup"
                      disabled$="{{disabled}}"
                      id="textbox"
                      value="{{query::input}}">
@@ -358,7 +359,7 @@ property 'group' sets to the header item name.
       },
 
       focus() {
-        this.querySelector('input').focus();
+        this.$.textbox.focus();
       },
 
       onClickInput() {
@@ -394,6 +395,10 @@ property 'group' sets to the header item name.
         }
       },
 
+      onInputKeyup(event) {
+        this.set('query', this.$.textbox.value);
+      },
+
       scrollLocusIntoView() {
         const elements = this.$.dropdown.items || [];
         for (const element of elements) {