I don't know if this is the right place to report bugs, so excuse me. (" ^_^)
IDFA/IDKFA makes the blue armor icon appear in the wrong place on GZDoom/UZDoom.
The only way to fix that is unfortunately to replace one of the armor pickup frames, which can cause problems in other areas (happens in Pvt Stone with specific mod combos) so I just left it as is, if a player is gonna cheat everything in I figure they can handle a little immersion breaking there lol