From 0c55b381dae9cc2d2c951fa8ac227e3940df9ebf Mon Sep 17 00:00:00 2001
From: Derek <derekbrowncmu@gmail.com>
Date: Tue, 12 Jun 2018 07:00:24 -0400
Subject: [PATCH] Fix a bug where the document map highlights incorrectly when
 the view is scrolled past the end of the file.

Fix #4579, close #4580
---
 PowerEditor/src/WinControls/DocumentMap/documentMap.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PowerEditor/src/WinControls/DocumentMap/documentMap.cpp b/PowerEditor/src/WinControls/DocumentMap/documentMap.cpp
index f90dd780..a2e88b28 100644
--- a/PowerEditor/src/WinControls/DocumentMap/documentMap.cpp
+++ b/PowerEditor/src/WinControls/DocumentMap/documentMap.cpp
@@ -248,7 +248,7 @@ void DocumentMap::scrollMap()
 			if (lowerY == 0)
 			{
 				auto lineHeight = _pMapView->execute(SCI_TEXTHEIGHT, firstVisibleDocLine);
-				lowerY = nbLine * lineHeight + firstVisibleDocLine;
+				lowerY = nbLine * lineHeight + higherY;
 			}
 		}
 		else