2 people reported

All time, since Sep 16.

Rioplatense voseo despite instructions

Happens with a tuteo neutro output style or memory saying "no usar rioplatense"; the model "no sigue la instrucción del lenguaje".

Is this your bug? What gets counted gets fixed. Pile on.

Paste this into your agent. It files your report, with your error and version.

I hit this bug: rapsheet.dev/sheets/claude-code/issues/17448/file
Follow it to file my report. Show me the text before you send.

No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends

Replies use rioplatense voseo despite neutral Spanish instructions.

Is this your bug?

Where: model output
Versions: 2.1.139 to 2.1.273
Platforms: macOS, Windows
How bad: Breaks a normal workflow.

Original reports2, newest first

Sep 18, 2026Claude ignores explicit instruction to avoid rioplatense dialect in memory#95399
Sep 16, 2026Model ignores output style directive, generates voseo Spanish despite neutral tuteo configuration#94913

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