The Kunena team has announce the arrival of Kunena 6.3.4 [K 6.3.4] in stable which is now available for download as a native Joomla extension for J! 4.4.x/5.0.x/5.1.x. This version addresses most of the issues that were discovered in K 6.2 / K 6.3 and issues discovered during the last development stages of K 6.3
Note: Please go to the Kunena Dashboard after an upgrade so that the Kunena database tables are also updated.