A few things qw has trouble with (apologies if you're already aware)

[yrmvgh]

• hungry ghost (gets stuck in a "want to eat, but I'm in danger" loop, eating and cancelling)
• unreachable moth of wrath in trog altar vault (qw wanders in to die)
• ranged lightning/cold damage without resists - qw wanders forward instead of backing around a corner like it normally does against ranged threats

[yrmvgh]

If maurice goes invis and gets away, qw swings at empty air endlessly

[Pipeliner]

Does not swinging stop after some time like with other invisible things that disappeared for some reason (e.g. teleport, stairdance, shafting)?