So... you say you haven't modified any
states, and you're using VX, correct? Are you using the default battle system as well? (By that, I mean
only the default, no extra scripts that modify
any portion of battle.) The reason I'm asking is because I can't think of any reason why the battler's sprite would remain after being defeated
without the default battle scripts having been modified.
With that said, I've also never seen this problem before, personally, so I'm not sure how much I can help, but the more information, the better.
Marc:Salaam.
To be as clear as possible, I believe that you would really want to look for are any scripts that would modify the classes
Sprite_Battler (since it handles the "collapse" animation on the battler),
Scene_Battle (since that would determine
when a battler "collapses"), or
Game_Enemy (since it defines the method "perform_collapse" as
used by Scene_Battle). I hope that was helpful to you.
(I am still new to RGSS2, by the way, so it is quite possible that I may have missed something. Please, do let us know in that case!)