Gwenview version: 16.04.1
Qt version: 5.6.1
KDE Frameworks version: 5.21.0

It seems like Gwenview has some trouble rendering some more complex SVG files, I have two more complex SVG files - in which case neither rendered properly.

Both SVG files are created using Inkscape, and are not optimized.

Reproducible: Always

Steps to Reproduce:
Open the first and second SVG files in Gwenview.

Actual Results:  
SVG files are not rendered properly, including:

1. Mis-placed objects;
2. Missing background;
3. Missing text;

Expected Results:  
SVG files should render well in Gwenview like in EOG and EOM.