Comment 5 for bug 1668115

Not a regression but actually a bug that went unnoticed so far!

The changes here only made the issue visible as " " (non-breaking space) is now properly treated as unnecessary whitespace and therefore removed if 'xml:space="preserve"' is not specified. Therefore the description ended up as an empty string "" which is an invalid string to translate (the .po format stores meta information in the empty string which is what your screenshot shows).

Fixed in
http://bazaar.launchpad.net/~inkscape.dev/inkscape/trunk/revision/15636
Descriptions are now only translated if the underscored version (<_param>) is used.