Lettera Version: 1.0.0
macOS Version: Tahoe 26.5.1
What were you doing: Viewing Markdown content that includes fenced code blocks.
What feature did you use: The copy-to-clipboard button for fenced code blocks.
What happened: The copy button for fenced code blocks does not appear at all in Lettera.
What did you expect to happen: Fenced code blocks should display a copy-to-clipboard button, and clicking it should copy the full code block contents. The same Markdown shows working copy buttons in MarkText and in the Codex side panel, so this appears to be a Lettera rendering or feature issue rather than a problem with the Markdown content.