I have the same issue. It drives me a little crazy. THANKS A MILLION HERO ceyiho. Your solution works like charm!
I also want to add that the change is to be made in v1.1 file functions.php located here public_html/wp-content/themes/sundance/ just under line 154.
i think i found a bug myself: in virtualkeyboard.php line 1438 -> if (!subm) self.VKI_target.form.submit(); -> need to remove the NOT subm to be like this -> if (subm) self.VKI_target.form.submit();
i appreciate the author confirm this bug fix is correct. Thanks again for a great job.
For those who can not get it installed and working you can email [email protected] I will try to help. Do not give up on it because it is a great light weight vkeyboard plugin for WordPress.