As in topic:
On OSX 10.9.5 with the latest google chrome there is sometimes a "%22" before the URL Link. That's complete annoying.
Test:
Wikipedia
http://www.onandoffables.com/index.php?m=arminarm
as you can see the second link is mangled.
Translation of this:
[iurl=http://www.wikipedia.org/]Wikipedia[/iurl]
[iurl=http://"http://www.onandoffables.com/index.php?m=arminarm"]http://www.onandoffables.com/index.php?m=arminarm[/iurl]