Hey Tim, thanks for your reply.
I don’t believe this is a common light bleeding issue, or at least it doesn’t look like one to me. I also never had this problem in any previous version of the engine.
There’s almost no illumination coming from the emissive material itself, but a very strong illumination on objects near the camera. This illuminated area is moving around as I move the camera. The same goes for the dark spot in the third picture in my first post - it’s not always in the same place, but appears whenever the camera gets close to an object.
Hopefully the video below can better illustrate what I mean: