Originally Posted by kovidgoyal
You mean it goes to an incorrect location? If so open a bug report and attach a file for which this problem happens. And mention a couple of locations in the file where bookmarking does not work.
I have the same problem. I set a bookmark on an ePub are reopened it later to resume reading. Clicking on the bookmark item in the tool bar displays by bookmark but when I click on it nothing happens. There doesn't seem to be any way to view the property of this bookmark, i.e. what location it is set to, so I can't tell if the location is corrupted or not set, or if it is set correctly and the "GOTO" mechanism is broken.