num_ctx prompt truncation limit is silently half the configured value (num_ctx/2 + 2), gpt-oss:20b, unrelated to num_parallel/num_predict

Important limitations

• This may be one public report, not widespread demand.
• Current independent report count: 1.
• This is currently a single independent report. It has not passed clustering or human review as a verified signal.
• No market size, willingness to pay, competition, or trend claims are inferred here.

What was reported

Who is affected

Application developer using the reported software

Job to be done

Run tests reliably

Workflow

Directly falsified via a controlled test: `prompt_eval_count` stayed

Desired outcome

set to `N`, a prompt up to `N` tokens should be processed without truncation

Severity

Not enough evidence yet.

Urgency

Not enough evidence yet.

Evidence indicators

What would upgrade this

• Additional independent reports from distinct communities or authors.
• Human clustering into a review signal, then explicit publication approval.
• Counter-evidence review and durable original-source verification.

Original source

Open the original public report