Comment 5 for bug 1542093

Reproduced with Inkscape 0.91 r13725 and 0.91+devel r14630 on OS X 10.7.5.

Of the three 'Steps' preferences, only the inset/outset option exposes incorrect unit handling.

AFAIU 'px' in the unit selector of the 'Steps' preferences should always refer to the real length of a CSS pixel (based on the drawing scale defined by SVGRoot's width, height and viewBox attributes).

Ideally, all 3 Steps options (move, scale, inset/outset) would have an additional unit 'SVG user units' (or maybe instead 'Display units') - this would better support the new templates in Inkscape >= 0.91 which vary the drawing scale (the "real" size of an SVG user unit (aka 'px' in SVG source)) depending on default units used in the template. Otherwise, the user needs to change the global preference setting depending on the currently edited document to have meaningful step sizes.