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Anti fingerprinting often slightly changes lots of things, including how the browser displays content so that's why.
Don’t worry, it’s just fearmongering because the cannot fingerprint your browser and want you to turn of the privacy features.
From I have found on Mozilla Support:
Random data is introduced to background images when the website reads back the image. If a website merely renders data to the background, it will render without alteration. Although typically this does not happen, if the website reads the image data in the background (and potentially displays it to you again), it will have subtle noise that may affect how the image is displayed.
this post was submitted on 22 Sep 2025
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