From 5369230cb7c26dc45908224b7a0a86b08fe4e978 Mon Sep 17 00:00:00 2001
From: Sam Foster <sfoster@mozilla.com>
Date: Mon, 30 Apr 2018 09:56:27 -0700
Subject: [PATCH] Bug 1457389 - Check if extension is in the overflow menu when
 setting fixedWidth on the popup. r=rpl

MozReview-Commit-ID: 3NqnOMpu18M

--HG--
extra : rebase_source : 2e77701c8e9cf94983b97b4a80d170dd86da0424
---
 browser/components/extensions/parent/ext-browserAction.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/browser/components/extensions/parent/ext-browserAction.js b/browser/components/extensions/parent/ext-browserAction.js
index 2ce8d1063230..8d5c827331bc 100644
--- a/browser/components/extensions/parent/ext-browserAction.js
+++ b/browser/components/extensions/parent/ext-browserAction.js
@@ -396,7 +396,9 @@ this.browserAction = class extends ExtensionAPI {
       pendingPopup.destroy();
     }
 
-    let fixedWidth = this.widget.areaType == CustomizableUI.TYPE_MENU_PANEL;
+    let fixedWidth =
+      this.widget.areaType == CustomizableUI.TYPE_MENU_PANEL ||
+      this.widget.forWindow(window).overflowed;
     return new ViewPopup(this.extension, window, popupURL, this.browserStyle, fixedWidth, blockParser);
   }