Created attachment 115547 [details]
Anonymized bugdoc (EMF+)

The attached EMF+ image is not opened correctly on Linux, lines are not shown (e.g. arrow lines).

* The bug was originally found on Linux (64-bit).
* The bug is not reproduced on Windows (both 32-bit and 64-bit). 
* The chart looks terribly broken with OS X builds. Only text elements are displayed.
* On all platforms rendering is OK with EMF_PLUS_DISABLE=1, not perfect of course, because the EMF+ image has more details. 
* I bisected the problem on Linux, and the first bad commit was mine, but in my opinion it only triggered the bug, because it seems to be unrelated.

 5b8ad54cc596a58da1f79937cc6709ce0799ac7f is the first bad commit
commit 5b8ad54cc596a58da1f79937cc6709ce0799ac7f
Author: Andras Timar <andras.timar@collabora.com>
Date:   Mon Jan 6 19:23:01 2014 +0100

    EMF/WMF: parse line cap and line join

I was surprised, that the following patch fixed the bug on Linux (but not on OS X):

diff --git a/vcl/source/filter/wmf/enhwmf.cxx b/vcl/source/filter/wmf/enhwmf.cxx
index c314ef6..152bee6 100644
--- a/vcl/source/filter/wmf/enhwmf.cxx
+++ b/vcl/source/filter/wmf/enhwmf.cxx
@@ -936,7 +936,7 @@ bool EnhWMFReader::ReadEnhWMF()
                         switch( nStyle & 0xF00 )
                         {
                             case PS_ENDCAP_ROUND :
-                                aLineInfo.SetLineCap( com::sun::star::drawing::LineCap_ROUND );
+                                aLineInfo.SetLineCap( com::sun::star::drawing::LineCap_BUTT );
                             break;
                             case PS_ENDCAP_SQUARE :
                                 aLineInfo.SetLineCap( com::sun::star::drawing::LineCap_SQUARE );