[Bug]: ASCII art inside fenced code blocks collapses and loses structure

GUI version

0.1.20 Windows (Can not select Windows in OS Toggle :) )

Operating system

Linux (other)

Reproduction steps

Steps to reproduce

1. Open Command Code desktop alpha.
2. Ask the model to "Write Code any kind of in Code block".
3. Receive a fenced code block whose language tag is go and whose body has normal indentation and ~20 to ~50 lines of code.
4. Read the rendered message.

Expected behavior

Expected behavior

• Each line of the source stays on its own line.
• Leading whitespace (indentation) is preserved.
• Lines that exceed the available width wrap, scroll, or both, but their structure is not destroyed.
• Syntax highlighting is applied according to the language tag (go in this case).
• The code is clearly copyable, with one logical statement per visible line.

Actual behavior

Actual behavior

• The whole body of the code block renders on a single wrapped line.
• Newlines from the source are missing.
• Indentation is collapsed. Every function body, every block, every nested call appears flush against the previous token, separated by a single space.
• The result looks like prose, not code, e.g.:

Screenshots, recordings, or sanitized logs

Safety check

• I removed credentials and private project information from this report.