From 7852cec48a71892fcd4398974618d8408b71ad4d Mon Sep 17 00:00:00 2001
From: roytam1 <roytam@gmail.com>
Date: Tue, 9 Nov 2021 21:19:43 +0800
Subject: [PATCH] [Pale-Moon] make sure anchor.top is not smaller than zero

---
 application/palemoon/modules/FormValidationHandler.jsm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/application/palemoon/modules/FormValidationHandler.jsm b/application/palemoon/modules/FormValidationHandler.jsm
index 387c221d74..5a2b07c004 100644
--- a/application/palemoon/modules/FormValidationHandler.jsm
+++ b/application/palemoon/modules/FormValidationHandler.jsm
@@ -124,7 +124,7 @@ var FormValidationHandler =
     let tabBrowser = aWindow.gBrowser;
     this._anchor = tabBrowser.popupAnchor;
     this._anchor.left = aPanelData.contentRect.left;
-    this._anchor.top = aPanelData.contentRect.top;
+    this._anchor.top = Math.max(0, aPanelData.contentRect.top);
     this._anchor.width = aPanelData.contentRect.width;
     this._anchor.height = aPanelData.contentRect.height;
     this._anchor.hidden = false;