Problem
Monsters react normally to many actions while paralyzed, despite the fact they can't move and thus shouldn't be able to.

'C'hatting with a paralyzed monster works just fine.
'e'ating the corpse of a monster of the same kind still makes them rage.
'g'iven items are still taken, ignored or refused normally (paralyzed beggars can still receive money and give you booze... somehow).
Hostile paralyzed monsters are able to fully resist any attempt to ':s'wap positions.

How to reproduce it
Paralyze a monster somehow (using the wand, having a pet ghoul attack them, or maybe duping them into hitting a gelatinous cube), then attempt any of the above actions on it.

Notes
Things I didn't test: 'a'pplying skills on them, other than Pick Pockets (which can still anger them), 'c'asting spells other than Bless (which still makes them look surprised), 'p'aying or selling things to a paralyzed shopkeeper, attempting to issue orders to a paralyzed companion.