Comment 1 for bug 1088156

Reproduced with (deprecated) gradient editor dialog in Inkscape 0.48.3.1 on OS X 10.7.4
Also affects the gradient stop entry on the controls bar of the enhanced gradient tool in current trunk (r11939) - though not all input values are equally affected (0.755 is stored as 0.755, but e.g. 0.765 is saved as 0.76499999).