Confirmed on Windows XP, Inkscape 0.48.4 and trunk revision 12276.
Workaround: apart from removing the attribute in an external text editor, you can also change the value to "default" in the XML editor.
Confirmed on Windows XP, Inkscape 0.48.4 and trunk revision 12276.
Workaround: apart from removing the attribute in an external text editor, you can also change the value to "default" in the XML editor.