Maybe some files are fixed now. If there are any files that were uploaded earlier and have an error in displaying, you can fix it by doing ?action=purge on the image description page (e.g. http://commons.wikimedia.org/wiki/File:Example.svg?action=purge, or simply use the gadget-function on the right tab menu). It should be noted, that often a different behavior in different resolutions. See also Category:Pictures showing a librsvg bug
More bugs are reported here: Commons:Commons SVG Checker#Checks
Rendering of textEdit
phab:T20936: This bug appears also in modern browsers on zooming levels.
An workaround can be the using of merge path.
phab:T20463: The libRSVG can handle SVG pattern only rudimentary. Some fixed examples (bug in file history):
grenn lines created with pattern (in 744px or higher the pattern are displayed correctly)