Dark Sight in Watermelon Field maps

In fact, DS does work normally in PQs, it's just that it doesn't protect from scenario/environmental damage such as spikes. You can still DS through the slimes in John's Last Quest, for example.

Don't forget that there's a stage in LPQ that REQUIRES you to be in dark sight.

Im not sure if it's a glitch or not, but would someone be able to clarify if it works the same in JMS/KMS/whatever?