I'm using mostly Yanfly's plugins alongside this one. As well as a few from SumRndmDde and Hime plugins. Moving it to the very top broke a few things, so I try to keep it below the Yanfly battle Engine Plugin.
Its still not working on my end. I tried moving it to the top, bottom, or above and below certain plugins but the issue persists.
Did you set the Ex Perameters of Hp or Mp Regeneration to -X% to cause an inverse effect like I did or did you do something else?