I've got the solution for you.
As Andrew told the problem is gone for new WordPress but for the old ones the issue is still there. I too faced the same issue. Installed multiple times the new version and deleted and reinstalled again but no success.
The Solution is:
Apply // comment: $dd_floating_bar = "<div class='dd_outer'><div class='dd_inner'>" . $floatButtonsContainer . "</div></div>" . $floatingJSOptions . $floatingJS . $dd_lazyLoad_scheduler_script . $dd_lazyLoad_jQuery_script;
You will find this code in /wp-content/plugins/digg-digg/digg-digg.php --> line number 356
After commenting and uploading digg-digg.php the issue will be resolved.