i get different results when i
A. … use a dome light with an HDRI map - dome light visible
visible in reflections turned OFF and same HDRI in Environment Slot (instance)
and
B. … use a dome light with an HDRI map - dome light visible
visible in reflections turned ON and NO HDRI in Environment Slot
i allways thought that the dome light overwrites the Environment Slot ???
B = Left side
I got identical images here, there is slight difference in the sampling which is expected but the overall brightness and etc is the same.
This is my scene: http://ftp.chaosgroup.com/support/sc…e_sky_test.max
HDRI could be downloaded from here : https://hdrihaven.com/hdri/?c=outdoo…rcus_maximus_2
I even tested that with V-Ray Sky and the result was the same.
Make sure that Dome Light intensity is set to 1 otherwise it won’t match Environment for sure.
Also, make sure that Lock Texture to Icon is disabled, otherwise Icon rotation will affect texture placement.
You can also attach the scene for investigation.
thanks for your time
i opened that scene again and did exactly the same as i did before and …
suddenly it works as expected
… sometime shit happens and you dont know why and sometimes you know 
Yes, getting the same thing twice is not always an easy task
If you replicate it again, save the scene and send it over for investigation.
