SVG: Inkscape arrowhead marker disappering after zoom

Question

I'm drawing an SVG line with arrowhead markers, everything looks good, but in Inkscape part of the arrows disappering after zoom. Do you know if the problem is in my marker code or it's Inkscape bug? Addition: The lines are in group which has rotation transform.

before zoom

after zoom

<marker refX="0px" 
        refY="0px" 
        orient="0" 
        overflow="visible" 
        markerWidth="7.972439" 
        markerHeight="2.65748" 
        id="arrow_right" 
        xml:space="default">
   <path d="M7.972439 0 L-3.98622 2.65748 L-3.98622 -2.65748 L7.972439 0 z"
         stroke="#FFFFFF" 
         stroke-width="0" 
         stroke-opacity="0" 
         style="fill:#000000;"
         xml:space="default" />
</marker>

Answer 1

Finally I found solution. It was caused by missing style in line element. The line has to have defined "fill" to "none" together with "fill-rule" set to "evenOdd".

fill="none"
fill-rule="evenOdd"