merge and exported gpx file doesn't validate </metadata>

[chippy]

When merging multiple small gpx files, and then right clicking on merged layer to export the merged gpx file, the resulting gpx changes the starting <metadata> tag to </metadata>

<?xml version='1.0' encoding='UTF-8'?>
<gpx version='1.1' creator='JOSM' xmlns='​http://www.topografix.com/GPX/1/1'>

</metadata>

<bounds minlat='50.86239166666667' minlon='0.24416333333333334' maxlat='50.87278166666667' maxlon='0.26026' />

</metadata>
<trk>

<trkseg>

OSM error:
Missing end tag for 'gpx' (got "metadata")
Line: 3
Position: 133
Last 80 unconsumed characters:

my info:
windowsXP
version 166
plugins, waypoints

workaround, using text editor, remove the /

Many thanks, and keep up the good work! :)