When you have precomputed lighting in your scene already built once, delete the static/stationary lights, check the “force no precomputed lighting” box and rebuild the lighting, for me the indirect lighting doesn’t reset itself to none/black.
I believe it’s not really the bug. Indirect lighting in fact reset, but you still have ambient light, which you can modify using Post Process Volume.
I asked about it here:
https://rocket.unrealengine.com/questions/4975/questionpost-process-global-illumination.html
It indeed works when you have a post volume in the scene. I was confused that the indirect lighting didn’t vanish right away when having checked “force no precomputed lighting” and rebuild, like it used to be in the former build.