The Kunena team has announce the arrival of Kunena 7.0.4 [K 7.0.4] in stable which is now available for download as a native Joomla extension for J! 5.4.x/6.0.x. This version addresses most of the issues that were discovered in K 6.2 / K 6.3 / K 6.4 and issues discovered during the last development stages of K 7.0
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it's the normal behaviour of kunena, you can change this behaviour by opening the file components\com_kunena\lib\kunena.parser.php and at the line 370 replace this :
