[Bug] userMessageBackground not rendering in fullscreen TUI mode on Windows

Status Open
Reported on v2.1.224
Maintainer reply None cached
Activity 0 comments · opened Aug 7, 2026

Bug Description
userMessageBackground never renders. tui: "fullscreen" is set in ~/.claude/settings.json; affects all sessions on Windows 11 / Windows Terminal. Built-in themes otherwise apply correctly (diff and syntax colours change with /theme). Tried built-in dark, light, light-ansi — no message background block in any. Custom themes in ~/.claude/themes/ are additionally ignored entirely: a "text" override that should recolour all body text does nothing after restart, while built-ins work.

Environment Info

  • Platform: win32
  • Terminal: windows-terminal
  • Version: 2.1.224
  • Feedback ID: 98ead073-907b-4177-a7a0-630dffba4ec1

Errors

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