diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -7,7 +7,7 @@
  */
 return array(
   'names' => array(
-    'core.pkg.css' => '04a95108',
+    'core.pkg.css' => 'ede6bf7a',
     'core.pkg.js' => '6972d365',
     'darkconsole.pkg.js' => 'e7393ebb',
     'differential.pkg.css' => '7ba78475',
@@ -136,7 +136,7 @@
     'rsrc/css/phui/phui-form-view.css' => '6a51768e',
     'rsrc/css/phui/phui-form.css' => 'aac1d51d',
     'rsrc/css/phui/phui-head-thing.css' => 'fd311e5f',
-    'rsrc/css/phui/phui-header-view.css' => '230254d3',
+    'rsrc/css/phui/phui-header-view.css' => '9961e480',
     'rsrc/css/phui/phui-hovercard.css' => 'de1a2119',
     'rsrc/css/phui/phui-icon-set-selector.css' => '1ab67aad',
     'rsrc/css/phui/phui-icon.css' => '3f33ab57',
@@ -829,7 +829,7 @@
     'phui-form-css' => 'aac1d51d',
     'phui-form-view-css' => '6a51768e',
     'phui-head-thing-view-css' => 'fd311e5f',
-    'phui-header-view-css' => '230254d3',
+    'phui-header-view-css' => '9961e480',
     'phui-hovercard' => '1bd28176',
     'phui-hovercard-view-css' => 'de1a2119',
     'phui-icon-set-selector-css' => '1ab67aad',
diff --git a/src/view/phui/PHUIHeaderView.php b/src/view/phui/PHUIHeaderView.php
--- a/src/view/phui/PHUIHeaderView.php
+++ b/src/view/phui/PHUIHeaderView.php
@@ -316,6 +316,15 @@
         $header_content);
     }
 
+    // This wrapper element allows titles to be triple-clicked to select them
+    // in Firefox. See T10905 for discussion.
+    $header_content = phutil_tag(
+      'span',
+      array(
+        'class' => 'phui-header-content',
+      ),
+      $header_content);
+
     $left[] = phutil_tag(
       'span',
       array(
diff --git a/webroot/rsrc/css/phui/phui-header-view.css b/webroot/rsrc/css/phui/phui-header-view.css
--- a/webroot/rsrc/css/phui/phui-header-view.css
+++ b/webroot/rsrc/css/phui/phui-header-view.css
@@ -80,6 +80,10 @@
   color: {$lightbluetext};
 }
 
+.phui-header-content {
+  display: inline-block;
+}
+
 .phui-object-box .phui-header-tall .phui-header-header,
 .phui-document-view .phui-header-tall .phui-header-header {
   font-size: 18px;