WebP toggle for a single image does not work

Hello,

I am trying to disable WebP only for one specific WooCommerce product image, without disabling WebP for the entire website.

In the official documentation, under the “Next-Gen Image Format” section, it says that this option is a “master switch”, but that the use of next-gen formats should be controllable on an image-by-image basis from the Media Library using the optm / non-optm toggle.

Also, in the “Changing Your Mind Image by Image” section, the documentation explains that it should be possible to switch a single image from optimized to non-optimized directly from the Media Library:

https://docs.litespeedtech.com/lscache/lscwp/imageopt/#changing-your-mind-image-by-image

However, in my case this does not work. In the “LiteSpeed Optimization” column of the Media Library, I see an “optimization” link next to the WebP entry, but when I click it, nothing changes. No real optm / non-optm switch appears, the label does not change, and the image continues to be served as .jpg.webp.

The issue affects a product photo with a label and small text. The original JPG is around 120–185 KB and looks sharp, while the generated WebP is around 16 KB and is visibly worse.

Perhaps I am missing something, which is why I would like to understand:

1. What is the correct procedure to disable WebP only for a single image?
2. Is there any other official method, hook, or filter to exclude a single image from WebP serving?

Last Report Number: IHCIPMLV

Thank you,
Dalila