Fullscreen renderer clipboard auto-copy broken in RStudio Server web terminal (Chrome)
Preflight Checklist
- [x] I have searched existing issues and this hasn't been reported yet
- [x] This is a single bug report (please file separate reports for different bugs)
- [x] I am using the latest version of Claude Code
What's Wrong?
Environment
- Claude Code version: 2.1.252
- Platform: RStudio Server web terminal (accessed via Chrome on macOS)
- Terminal type: Web-based terminal emulator (xterm.js)
## Description
When enabling the new fullscreen renderer via the startup prompt, the advertised "Selected text auto-copies to your clipboard" feature does not work.
### Actual Behavior
Text selection works visually but nothing is copied to the clipboard. Standard copy operations (Cmd+C) also don't work.
### Workaround
Using /tui command to switch back to default renderer restores working text selection and copy functionality.
## Additional Context
This may be related to browser clipboard API restrictions in web-based terminal emulators. Issue #90698 describes similar clipboard problems in native Terminal.app, but this is specific
to browser-based terminals.
What Should Happen?
Selected text should automatically copy to clipboard as advertised, or the fullscreen renderer should not be offered if incompatible with browser-based terminals.
Error Messages/Logs
Steps to Reproduce
- Launch Claude Code in RStudio Server's terminal (Chrome browser)
- Accept the prompt: "Try the new fullscreen renderer?"
- Select text in the terminal with mouse
- Attempt to paste - nothing is copied to clipboard
Claude Model
Opus
Is this a regression?
I don't know
Last Working Version
_No response_
Claude Code Version
2.1.252 (Claude Code)
Platform
Anthropic API
Operating System
macOS
Terminal/Shell
Other
Additional Information
_No response_