comfyanonymous
Image preview shows the last image, on the first step.
EDIT:
This is also happening with other models ( e.g. SD1.5 ), not only Flux ... I noticed it on Flux first, because it's slower ...
Expected Behavior
When using the Flux models, the Sampler node shows the image preview starting from step 1.
Actual Behavior
In the first step preview, we see the last step from the previous generation. And in the first image generation it shows a black image, as a preview for the first step.
This is a minor issue. The preview works fine after the first step.
At step 1 the Sampler node shows the final preview from the last generation.
From Step 2 onwards, the preview works correctly.
Steps to Reproduce
Tested on the Flux example workflows. The preview method is set to "Auto", in the Manager.
Debug Logs
( No errors are shown in the terminal )
Other
No response
I also experience this phenomenon occasionally. It seems to be occurring since the introduction of async to the preview.
This seems to be fixed now.
Also, after this commit ( https://github.com/comfyanonymous/ComfyUI/commit/1770fc77ed91348f4060e3c0b040c1519d6f91d0 ) I added the taef1 files, and the Flux preview was greatly improved.
https://github.com/madebyollin/taesd