Custom skybox color issues

I have an issue with rendering with custom skyboxes. If I add a custom skybox with a blue sky, the interiour of my buildings becommes bluish.

If I remove the sky from the skybox, the colors becommes normal.

I have tried a workaround to use transparant sky and have it use the enscape dynamic clouds. This gets rid of the bluish effect.

However this is not a feasable workaround, as you need to add the 360 picture to the enscape data folder, and it is not possible to rotate it. Also, the normal 360 aspect ratio of 2:1 will not work with this.

Quote from Thomas Willberger

You seem to use "draft" mode which has a very simplified and inaccurate lighting simulation. If you pick medium or High instead, it will look correct.

Thank you for your quick response.

Actually I've tried all the detail modes, and the bluish effect get added on everywhere from draft to ultra.