diff --git a/browser/base/content/tabbrowser.xml b/browser/base/content/tabbrowser.xml
index cd96b18ba184..b5241f5f9f51 100644
--- a/browser/base/content/tabbrowser.xml
+++ b/browser/base/content/tabbrowser.xml
@@ -182,7 +182,8 @@
           if (!window.gShowPageResizers)
             return;
 
-          var show = document.getElementById("addon-bar").collapsed;
+          var show = document.getElementById("addon-bar").collapsed &&
+                     window.windowState == window.STATE_NORMAL;
           for (let i = 0; i < this.browsers.length; i++) {
             this.browsers[i].showWindowResizer = show;
           }
@@ -2864,6 +2865,7 @@
                 this._handleTabSelect();
                 this.mTabstripWidth = width;
               }
+              this.tabbrowser.updateWindowResizers();
               break;
           }
         ]]></body>