I did provide details to the Kunena team but here are some details: When I first experienced this it was using a LitespeedPHP / mariaDB server php v 7.2.20 Latest versions of Kunena/Paid Blue Eagle, and Joomla and EasySocial.
Getting no feedback here from the Kunena team I checked other sources. Apparently this issue has appeared over the years with Joomla for different reasons but almost always as far as I can tell, in conjunction with some sort of caching.
Other than the default Joomla memcache memcached, I was not and am not using any sort of caching. Even on the Litespeed server I was not using the Litespeed joomla plugin.
I moved the site off of Litespeed in case that was the problem to a standard LAMP apache/mysql php 7.2. Not only did this not resolve the problem but almost immediately after moving the site to the new server and only a few users actually logged in, the problem reappeared. It was a minor example of a kunena post displaying in the EasySocial stream by the wrong user but as it was a post from my Joomla administrator account shown as being posted by a regular user, it was a massive disappointment.
I am really disappointed and surprised even, that this issue isn't taken seriously here. It seems like such a massive FUBAR problem that demands attention but I've gotten nothing.