Tested on version current version at the time (downloaded , not the online/browser version) , 2.4.1
Selected Stable Diffusion for the model (in the 3rd button)
Enabled the img2img function (the 2nd button i mean), uploaded the following picture i wanted as a basis and set the denoising to 0.75 , no control net is selected :
For prompt (1st button) i used
high quality portrait by Jeremy Lipking
for negative i used
worst quality, ugly, low res, bad proportions
Then i generated 4 images.
Result all the image obtained are the same :
Regenerating more times only result in always the same images being obtained.
I tested on another Stable Horde UI ( https://aqualxx.github.io/stable-ui/ ) and using the same setting, image basis and prompts it works without problem, i obtain images created by the AI using the original image as a basis, but on Lucid Creation it does nothing and only result in the original image unmodified .