diff --git a/src/browser/base/content/zen-panels/site-data.inc b/src/browser/base/content/zen-panels/site-data.inc
index dab190c80..e5a774b88 100644
--- a/src/browser/base/content/zen-panels/site-data.inc
+++ b/src/browser/base/content/zen-panels/site-data.inc
@@ -17,7 +17,8 @@
       <hbox id="zen-site-data-header">
         <toolbarbutton id="zen-site-data-header-share"
                         data-l10n-id="zen-site-data-share"
-                        flex="1" />
+                        flex="1"
+                        closemenu="none" />
         <toolbarbutton id="zen-site-data-header-reader-mode"
                         command="View:ReaderView"
                         flex="1" />
diff --git a/src/zen/urlbar/ZenSiteDataPanel.sys.mjs b/src/zen/urlbar/ZenSiteDataPanel.sys.mjs
index b948cafd0..aebbfc657 100644
--- a/src/zen/urlbar/ZenSiteDataPanel.sys.mjs
+++ b/src/zen/urlbar/ZenSiteDataPanel.sys.mjs
@@ -81,13 +81,11 @@ export class nsZenSiteDataPanel {
   }
 
   #setSiteHeader() {
-    const { gReaderMode } = this.window;
-
     {
       const button = this.document.getElementById('zen-site-data-header-reader-mode');
       const urlbarButton = this.window.document.getElementById('reader-mode-button');
-      const isActive = gReaderMode?.isActive;
-      const isVisible = (urlbarButton && !urlbarButton.hidden) || isActive;
+      const isActive = urlbarButton?.hasAttribute('readeractive');
+      const isVisible = !urlbarButton?.hidden || isActive;
 
       button.disabled = !isVisible;
       if (isActive) {