The Kunena team has announce the arrival of Kunena 6.1.0 [K 6.1.0] which is now available for download as a native Joomla extension for J! 4.3.x & J! 4.2.x. This version addresses most of the issues that were discovered in K 6.0 and issues discovered during the development stages of K 6.0
I have tried using code like Some Text [/b} and when I look and create a new topic is see <strong>Some Text</strong>, Then when I preview it shows it underlined with <strong> </strong> on each end and its not bold.