Text Selection in Dialog Captures Background Content in iTerm2

[boojongmin]

Description

GitHub Issue: Text Selection in Dialog Captures Background Content in iTerm2

Title

Text selection in authorization dialog includes content outside dialog boundaries when using Cmd+Click or drag selection in iTerm2

Description

When using opencode in iTerm2, the OAuth authorization dialog has text selection issues that make it difficult to copy the authorization URL.

Environment

• Terminal: iTerm2
• Application: opencode (TUI)

Problem

The authorization dialog displays a URL that needs to be copied, but text selection behaves incorrectly:

1. Cmd+Click selection: Only selects text from the clicked line, missing the full URL
2. Drag selection: Selects text outside the dialog boundaries, capturing background terminal content

Expected Behavior

• Text selection should be constrained to the dialog content only
• Users should be able to easily select and copy the complete authorization URL

Example of incorrectly selected text:

https://claude.ai/oauth/authorize?
                                                                                      code=true&client_id=9d1c250a-e61b-44d9-88ed-
                                                                                      5944d1962f5e&response_type=code&redirect_uri=https%3A%2F
                                                                                      %2Fconsole.anthropic.com%2Foauth%2Fcode%2Fcallback&scope
                                                                                      =org%3Acreate_api_key+user%3Aprofile+user%3Ainference&co
                                                                                      de_challenge=2Wy5LVaiONMHHw2yuf-CXveSoVvugkKnlzwdz4x9W88
                                                                                      &code_challenge_method=S256&state=uzVmwAC-e4nIhjiPKnmgMj
                                                                            ┃         2VLNhio_5Qi6b4pwdx4kd1ihj40bq0mobkkAh5ky_j53WdIhkPAr8brc
                                                                            ┃  Ask a  A1qzwz3Q

Plugins

No response

OpenCode version

No response

Steps to reproduce

No response

Screenshot and/or share link

No response

Operating System

No response

Terminal

No response

[github-actions[bot]]

This issue might be a duplicate of existing issues. Please check:

• #6209: Cannot scroll on opencode when using iterm - Also iTerm2 specific issue with mouse interaction and terminal rendering
• #6538: Mouse scrolling and selecting on dialog-command.tsx (ctrl+p) is broken only when is no session opened - Related to hit-grid calculation issues affecting mouse selection in dialogs
• #6923: Cli display has issues in the macOS built-in terminal - Related to terminal display rendering issues on macOS terminals
• #6912: Ctrl+C does not disable mouse tracking, causing raw escape sequences to flood terminal - Related to mouse tracking state management in terminal

Feel free to ignore if none of these address your specific case.

[kommander]

That looks like terminal native selection. Are you selecting with a modifier like shift when drag selecting?