Gianfranco - please note that both bugs you refer to are closed already. It'd be more interesting to look into new bugs like bug 88893 which expose similar problems, but probably on newer versions of the software.
** Changed in: evince (Ubuntu) Assignee: Ubuntu GNOME => Ubuntu Desktop Bugs -- Content disappears when text is highlighted https://launchpad.net/bugs/3025 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs