when zooming the document is always scrolled back to the beginning

[LAZA]

I have an very big pdf documention an do a lot of zooming in it (also attatched):
http://autobahnatlas-online.de/PlanungBauKarteMitAS.pdf

Each time i zoom in or out, the view is set Pos1 (0,0) of the document - whereever i have been before.
This is very annoying cause to search, find and relocate a wanted spot (especially if your're planning a journey).

.

Guest: Xubuntu 14.04 alpha2

Host: Xubuntu 12.04.3
VirtualBox: 4.3.6

.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xpdf 3.03-16+experimental2
ProcVersionSignature: Ubuntu 3.13.0-7.26-generic 3.13.1
Uname: Linux 3.13.0-7-generic i686
ApportVersion: 2.13.2-0ubuntu2
Architecture: i386
CurrentDesktop: XFCE
Date: Thu Feb 6 16:11:32 2014
InstallationDate: Installed on 2014-02-05 (0 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha i386 (20140121.1)
SourcePackage: xpdf
UpgradeStatus: No upgrade log present (probably fresh install)

[Florian Schlichting (fschlich)]

--- a/xpdf/PDFCore.cc
+++ b/xpdf/PDFCore.cc
@@ -295,10 +295,10 @@
   } else {
     scrollYA = scrollY;
   }
- if (zoomA != zoom) {
+/* if (zoomA != zoom) {
     scrollXA = 0;
     scrollYA = continuousMode ? -1 : 0;
- }
+ }*/

   dragging = gFalse;
   lastDragLeft = lastDragTop = gTrue;

This will disable scroll-to-top, but zooming in will not display an area from the center of the previously visible area, but something closer to or even beyond the top left corner of the previously visible area...