This trick is not working proper in Version 1.3.
In the mouse over, along with the question, appears the html tags.
The user is not able to read the question as it shows the html tags also.
Find the screenshot here
For version 1.3 there have been some changes, because posts can contain HTML. So in qa_post_html_fields(...) in qa-app-format.php, you should now insert these lines to display the content on mouseover:
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.
July 15, 2020: Q2A 1.8.5 released!