Yeah, it's not really a "bug" per se. I thought about the light issue, and decided to not touch it, simply because some items have a light property on them already.
There is, of course, an in-game way to remove the light, but of course that costs money to use, and some may not pursue that due to the locations of such devices and deity relations/paladin codes.
If enough people are interested or wanting the light removed as well, I'll make a "deluminator" too.