Region render passes darker than original

[yavor.rubenov]

Are you using Update 1 ? The issue we know of is fixed there.

[Pixelcon]

I am using 5.10.01.30655 and the problem is still with me. See the lighting pass:

[yavor.rubenov]

Hmm could you send the scene to support then - the build you are using already has the fix so maybe there's something else.

[Pixelcon]

Could it be related to this 'consistent lighting elements' setting?

If I switch from IR to BF the problem is resolved.
OR
If I switch 'consistent lighting elements' off and continue with IR the problem is resolved. I don't care what the implications are (I'm not doing 32-bit compositing for example) so for me this is solved. But then again perhaps it is somehow related to vfb history so if it arises again I'll let you know.