SVG which includes mask does not display correctly in any browser/viewer except Inkscape

Screenshot #2: as seen in Google Chrome

The actual SVG file

Please add information about OS/platform and Inkscape version to the bug description, thank you.

Changed status to "New" after adding missing information

Steps to reproduce (from scratch):

1) launch Inkscape 0.91 (default new doc, default prefs)
2) draw a rectangle with geometry 100x100px
3) change rectangle style to blue fill, no stroke
4) position at the bottom left corner of the A4 page
5) draw a circle on-top of the rectangle (use node snapping to rectangle corners)
6) change circle style to white fill, no stroke
7) convert circle to path (Shift+Ctrl+C)
8) select all, apply mask
Save, view in browser: ok
8) open Document properties, resize page to drawing
Save, view in browser: the masked object is "gone"

AFAIU Inkscape's mask definition with maskUnits="userSpaceOnUse" should compensate the offset (translate() transformation) of the parent group of the masked object (this offset gets added to all top-level objects including layers when resizing the page to drawing content) via x, y coordinates for the off-screen buffer (or maybe apply the transformation to the mask content instead (?)); otherwise other SVG viewers (Chromium, Firefox, Batik, librsvg) seem to render the mask at the "wrong" location, and the masked object "disappears" (it is masked out because the offset mask in is "transparent" in the area of the masked object).

Related earlier report:
Bug #404009 “rendering different in inkscape than FF/Baltik with masked objects”

As possible workarounds for affected users:
a) resize the page first, and only add content on a layer newly added after having resized the page, or
b) with use cases like the example attached in this report: draw the initial object aligned with its top-left corner to the top-left corner of the page instead of positioning the bottom-left corner of the object at the bottom-left one of the page (step 4).

Proposing to link as duplicate to bug #404009.

See also (simpler) steps to reproduce in duplicate bug #1507565.

If you apply mask item parent transform to mask, render ok. Not sure if is the best method.