and one more thing, if you change the UV_Scale to -1,- you replace  the south with the north the light is not correct anymore you should replace also the HDR light Probe UV_scale to -1,0 , this make not sense .. wanna have nice view turn the camera and keep the poser standart , Vue view is from East-South to West-North too... if the photographer make mistake showing the front in place of the nice back why you should change the all system for one bad HDR Map ? and now all follow this too in wrong way...
Alex you changed your IBL to -1,0 mixed up the light that will not match the background..

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