From 4ac1f60c1e201547302dd1d74fa6244a14ce2eef Mon Sep 17 00:00:00 2001
From: Xidorn Quan <me@upsuper.org>
Date: Wed, 21 Mar 2018 16:02:05 +1100
Subject: [PATCH] Bug 1446264 part 2 - Ignore XUL position when sizemode is
 maximized. r=bz

MozReview-Commit-ID: 2NTZBeehXam

--HG--
extra : rebase_source : 0359b7d6237e7cb70e785141d7914dce10ef2c47
---
 xpfe/appshell/nsXULWindow.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/xpfe/appshell/nsXULWindow.cpp b/xpfe/appshell/nsXULWindow.cpp
index de872b471ae5..a7aeeb58a36a 100644
--- a/xpfe/appshell/nsXULWindow.cpp
+++ b/xpfe/appshell/nsXULWindow.cpp
@@ -1364,10 +1364,11 @@ bool nsXULWindow::LoadMiscPersistentAttributesFromXUL()
     auto* piWindow = nsPIDOMWindowOuter::From(ourWindow);
     piWindow->SetFullScreen(true);
   } else {
-    // For maximized windows, ignore the XUL size attributes, as setting the
-    // size would set the window back to the normal sizemode.
+    // For maximized windows, ignore the XUL size and position attributes,
+    // as setting them would set the window back to normal sizemode.
     if (sizeMode == nsSizeMode_Maximized) {
       mIgnoreXULSize = true;
+      mIgnoreXULPosition = true;
     }
     mWindow->SetSizeMode(sizeMode);
   }