If use ESC key to exit the Camera mode when it happens, the effect will still working and looks so funny when the sprites still messed up after killed monster, even Duke's sprite also happens...it can be fixed if just gibed them by explosions, but it'll happens again on other monsters when you do the same shit again.
https://youtu.be/Xnw3xd8ruu0
https://youtu.be/L9wCjYU-h4Q
Tried to record them but maybe due to the fps setting, it doesn't shows well clearly... but I'm sure it happens...those 2 videos are in r5581(20160121-5581)... I tried to finger out the last working version without this problem is r5474(20151219-5474), and the next one started to bugged that I can downloaded from Dukeworld site is r5491(20151222-5491).
Tested only with x64 Debug builds, but I don't see the normal one and x86 counter-parts won't happens.
It just minor problem but still needed to fix I guess.
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EDIT: It's on Polymost renderer, not tested on Classic or Polymer ones...