Set the other columns as explicitly using the default font, to work around the previous issue (but still pack columns, for consistency).
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>com.nokia.carbide.search.system-feature</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
</buildSpec>
<natures>
</natures>
</projectDescription>