Connection arrows in exported SVG not shown in Draw/Visio

Hi,

i exported *.bpmn digrams as SVG.
If I open them in e.g. internet explorer all is fine. The Graphic is shown correctly.

But if I open the *.svg files created with camunda modeler in MS Visio or LibreOffice Draw the connector arrows (start and end point of the connector line) dissappeared.

Whats wrong?