I never noticed this in earlier versions: Light bugs do not longer sleep during night. They still fly around, produce light that disturbs the sleep of my dups. It seems for me the only way to prevent this (as their are no "solid doors" except pressure doors) is to kill all bugs or keep them in some enclosed room far away. This is quite annoying.
Steps to Reproduce
Happened for me every night
This issue has not been confirmed by a developer yet.