Comment 4 for bug 1589217

The changes from r13938 and r14648 mentioned in the bug description (see also comment 2) have been reverted in trunk lp:inkscape r15273 (backported to stable lp:inkscape/0.92.x r15220), as part of a solution for bug #1389723.

The original known trigger for the symptom reported here is thus gone:
- reproduced with lp:inkscape/0.92.x r15219
- not reproduced with lp:inkscape/0.92.x r15220:
  the test case opens in without unexpected changes to the objects'
  attributes; there is no viewBox attribute forcefully added to the
  (entirely 'px'-based) document either).

The underlying problem - adding a viewBox attribute on load affects (potentially modifies) the whole document, even if the document scale is identical (based on width, height attributes of root <svg> element in px/SVG user units) - likely remains unsolved, though currently not directly exposed.

Proposing to close (for now) as 'Won't Fix' (because no longer reproducible as reported with current builds).