diff --git a/content/treestyletab/treestyletab.xul b/content/treestyletab/treestyletab.xul
index 777234d4..891fc244 100644
--- a/content/treestyletab/treestyletab.xul
+++ b/content/treestyletab/treestyletab.xul
@@ -144,6 +144,7 @@
 	</menupopup>
 	<tooltip id="treestyletab-full-tree-tooltip"/>
 	<panel id="treestyletab-autohide-content-area-screen"
+		treestyletab-ignore-state="true"
 		onpopupshowing="if ('setConsumeRollupEvent' in this.popupBoxObject) this.popupBoxObject.setConsumeRollupEvent(Components.interfaces.nsIPopupBoxObject.ROLLUP_NO_CONSUME);"
 		onclick="this.hidePopup();"
 		onDOMMouseScroll="this.hidePopup()"/>
diff --git a/modules/base.js b/modules/base.js
index 1efbfde5..a922479c 100644
--- a/modules/base.js
+++ b/modules/base.js
@@ -124,6 +124,7 @@ var TreeStyleTabBase = {
 	kNARROW_SCROLLBAR   : 'treestyletab-narrow-scrollbar',
 	kFAVICONIZED        : 'treestyletab-faviconized',
 	kBG_NOTIFY_PHASE    : 'treestyletab-notifybgtab-phase',
+	kIGNORE_POPUP_STATE : 'treestyletab-ignore-state',
 
 	kTAB_INVERTED          : 'treestyletab-tab-inverted',
 	kTAB_CONTENTS_INVERTED : 'treestyletab-tab-contents-inverted',
diff --git a/modules/window.js b/modules/window.js
index 0cb50682..ab9e1c69 100644
--- a/modules/window.js
+++ b/modules/window.js
@@ -1084,7 +1084,13 @@ TreeStyleTabWindow.prototype = {
 		this._shownPopups = this._shownPopups.filter(function(aItem) {
 			if (typeof aItem == 'string')
 				aItem = this.document.getElementById(aItem);
-			return aItem && aItem.boxObject && ((aItem.boxObject.width || aItem.boxObject.height) && aItem.state != 'closed');
+			return (
+				aItem &&
+				aItem.getAttribute(this.kIGNORE_POPUP_STATE) != 'true' &&
+				aItem.boxObject &&
+				(aItem.boxObject.width || aItem.boxObject.height) &&
+				aItem.state != 'closed'
+			);
 		}, this);
 		return this._shownPopups.length > 0;
 	},