Helllo，everyone. In this example there are two rooms, one with windows and the other without, I followed this post below and researched and found that when performing a simulation ‘Daylight Factor’ the air boundary is completely translucent, but when simulating ‘Annual Daylight’ the air is convenie…

[image] mostapha: @mikkel is working on a solution Check this post for an update. -A.

This looks like a bug! I know that @mikkel is working on a solution.