G'MIC's preview is different from what is rendered

I was playing around with the GUI Retinex and Tone mapping filters and noticed that the preview and resultant layer don’t match in appearance. Searching the forum lead me to this year-old thread. It would be nice if things were WYSIWYG but I generally use CLI so it doesn’t matter as much to me. I would be happy to provide more info like screenshots if anyone is interested.

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