i tested on win7 x64, os local zh-cht, inkscape local en and zh-cht;
win8.1 x64, os local zh-cht, inkscape local zh-cht.
it is the same whichever local is set in inkscape.
the box once shown the value and can be edit, but when the box is deactivated and reactivate again, e.g. deselect an object and select another object or switch tabs in the Fill nd Stroke dialog, the boxes become blank.
i tested on win7 x64, os local zh-cht, inkscape local en and zh-cht;
win8.1 x64, os local zh-cht, inkscape local zh-cht.
it is the same whichever local is set in inkscape.
the box once shown the value and can be edit, but when the box is deactivated and reactivate again, e.g. deselect an object and select another object or switch tabs in the Fill nd Stroke dialog, the boxes become blank.