shadow drawing regression

[Ivan Timofeev]

Hi Miklos,

http://cgit.freedesktop.org/libreoffice/core/commit/?id=cf7bd4852

so it first paints background then shadow. But try to zoom out with at 
least 2 pages - the second page gets painted after the first page, and 
the shadow overlaps the already rendered page. It worked earlier on 
because the shadow image is nearly transparent, it was hard to notice 
the effect. Now it is evidently noticeable. :)

No idea how to fix this, maybe it is possible to get the size of the gap 
between the pages and set a clip region?...

Should I file a bug report?

Best regards,
Ivan