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Victor KuznetsovandClaude Opus 4.8 183793fbf2 fix(invisible): disable diffusers SDXL watermarker on removal output
The SDXL removal pipelines (sdxl + controlnet) were built without
add_watermarker=False, so diffusers embedded its default open "Stable
Diffusion XL" DWT-DCT invisible watermark on every output whenever
invisible-watermark is installed (the detect extra). A watermark REMOVER was
therefore replacing one detectable AI watermark (SynthID) with another: the
cleaned output re-read as AI (identify -> "Open invisible watermark: Stable
Diffusion XL"), observed on the SynthID validation sample.

Both SDXL loaders now call a shared _disable_sdxl_watermarker helper (mirrors
_maybe_add_fp16_vae; the ControlNetModel sub-model and the Qwen loader never
call it, since only the pipeline accepts the kwarg). Verified end to end: the
affected outputs re-run clean (is_ai=None, no open watermark).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-14 17:16:49 +03:00
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