It looks like the rendering quality settings are different between the first and second images.
Can you verify that you have the quality set to high or ultra?
Hi!
The render quality settings have not been changed in the two images, and I also have these problems with a different design…
It is an enclosed space and light seems to come in from outside through many different places.
I have also added an example from the other project. Here too, you can see outside through the mirrors everywhere…?
Thanks!
…but there has to be some differences between both, maybe minor ones but you will have to remember what you changed. Otherwise tomorrow it will be different again and would not be cool at least if it is not intended. Although a subtle random light iteration would be a nice feature for light lovers 
Seems that the light is becoming more white in terns of kelvins. Images dont look interior anymore, they feel like you are outside in terms of lightning… Are you using IBL/HDR under skybox or the standard sky from Enscape? Did you update Enscape between images?
Cheers
Normally, I keep track of all my settings carefully. This has nothing to do with settings. When I transfer my entire SketchUp drawing to a new drawing and start working with a new Enscape, I still see the same problems…
Of course, I don’t want to say that this has anything to do with Enscape, but perhaps with my graphics card or something similar?
why would your graphic card behave different now? keep testing it a bit for the next days and see what you get…
What I understood is that the wall behind the camera is missing in Image 2. That’s why the HDRI is visible in the mirror, and the light effect is from HDRI.
Do you have sections created or some walls hidden in the main 3D view? If yes, try turning on the “Export Geometry” option, this will keep the hidden objects for specific views.
The second photo was taken earlier, and this is how it should be. Now, one day later, in the same section, it looks like photos 3 and 5…
I’ve really tried everything and reset it, but through the mirrors you can just see the outside air… how frustrating.
Incidentally, there are no hidden walls or cross-sections.
