--- a/browser/base/content/tabbrowser.xml
+++ b/browser/base/content/tabbrowser.xml
@@ -2562,16 +2562,23 @@
             let listener = this._tabListeners.get(tab);
             aBrowser.webProgress.removeProgressListener(filter);
             filter.removeProgressListener(listener);
             listener.destroy();
 
             this._tabListeners.delete(tab);
             this._tabFilters.delete(tab);
 
+            // Reset the findbar and remove it if it is attached to the tab.
+            if (tab._findBar) {
+              tab._findBar.close(true);
+              tab._findBar.remove();
+              delete tab._findBar;
+            }
+
             aBrowser.destroy();
 
             let notificationbox = this.getNotificationBox(aBrowser);
             this.mPanelContainer.removeChild(notificationbox);
             tab.removeAttribute("linkedpanel");
 
             this._createLazyBrowser(tab);