This is regression from 1.1.7
Accessing links from sidebar containing #anchor character (#) is broken:
Unable to load page
Problem occurred while loading the URL file:///usr/share/gtk-doc/html/pygtk/pygtk-introduction.html%23id2844269
Error stating file '/usr/share/gtk-doc/html/pygtk/pygtk-introduction.html#id2844269': No such file or directory
TIP: Easiest way to find links containing # is to use search :P
*** Bug 26119 has been marked as a duplicate of this bug. ***
Fixed in devhelp instead, sorry for spam.