[bug] Terminal intermittently renders English text as RTL-looking gibberish #4010

Describe the bug

The Superset terminal intermittently renders normal English terminal/session text as RTL-looking gibberish.

Only some words or UI/status fragments are affected. Other text in the same terminal remains readable. This looks like terminal rendering/glyph corruption rather than shell output encoding corruption.

Screenshot

Attached screenshot shows:

• Mixed readable English and corrupted glyphs in the same terminal output
• Normal command output structure still visible
• Corruption affecting some words/punctuation, not the whole terminal buffer

Steps to reproduce

I do not have a deterministic reproduction yet, but it happened during normal extended terminal usage:

1. Open Superset Desktop.
2. Open a workspace terminal.
3. Run Codex CLI/Claude Code inside the terminal.
4. Let the session produce normal command/status output for a while.
5. Some English terminal/session words intermittently render as RTL-looking gibberish.

Expected behavior

All terminal text should render consistently as readable UTF-8 text. English labels, command output, status lines, and punctuation should not become corrupted glyphs.

Actual behavior

Some English text fragments become unreadable RTL-looking gibberish while nearby terminal text remains readable.

Environment

• Superset Desktop: 1.8.0
• OS: macOS 26.2 (25C56)
• Shell: zsh (/bin/zsh)
• TERM: xterm-256color
• Locale:
  • LANG=C.UTF-8
  • LC_ALL=C.UTF-8
  • LC_CTYPE=C.UTF-8
• CLI running in terminal: Codex CLI

Related issues

This may be related to existing terminal rendering/glyph corruption issues, but I am filing it separately because this case is not CJK text and appears as RTL-looking glyph corruption in mostly English output:

• Terminal renders garbled characters (WebGL texture atlas corruption) #3794
• [bug] Claude code rendering issue in superset terminal #3668
• [bug] macOS terminal rendering can corrupt and ghost into chat until fullscreen toggle #3504
• [bug] Intermittent garbled text rendering with multiple Claude Code tabs and Chinese content #3572
• [bug] Terminal Output Corruption (Garbled CJK Characters) and Layout Glitches during Heavy Usage #3527