OWUI 0.9.6+ regression: Function Calling: Native on
huihui_ai/qwen3-vl-abliterated:8b produces empty assistant turns
even with enable_thinking=false in custom_params. The model's
tool-call output stops being dispatched and the chat completion
finishes successfully, so the failure presents as "the model
decided not to call the tool" — no error, no tool block, just
empty assistant content with follow-up chips. Diagnosed in a live
debug session: confirmed Function Calling was Native in the
running OWUI, enable_thinking was off, tool still didn't fire;
flipping to Default fixed dispatch immediately.
This supersedes d8c8421 ("lock in working config — Native +
enable_thinking=false"), which was correct through OWUI 0.9.5 but
no longer holds. Returns to the 1ed2e72 config (Default) for the
same fundamental reason: Native does not reliably parse Qwen 3.x
output on the current OWUI parser. Trade-off (unchanged from the
1ed2e72 era): no structured "View Result from edit_image" UI
block — tool results render as plain text in the assistant
message instead.
Kept enable_thinking=false in custom_params. It's no longer
strictly required (Default's wrapper doesn't read model thinking
output), but it saves the tokens Qwen would otherwise spend on
hidden thinking before each dispatch.
Updated image_studio.md to match: Function Calling table row,
Custom Parameters note, and Qwen-quirk explainer all rewritten;
added a new "Open WebUI 0.9.6+ regression" paragraph documenting
the empty-turn signature so the failure mode is recognisable
without re-deriving it.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
57_Wolve
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