desktop: Models/Providers dialogs cannot be scrolled (mouse wheel and arrow keys dead, no scrollbar) #50175

Summary

In OpenCode Desktop, lists inside the Models and Providers settings dialogs cannot be scrolled or navigated: the mouse wheel/trackpad does nothing, no scrollbar is rendered, and keyboard navigation (arrow keys, PgUp/PgDn, Home/End) is completely unresponsive. Entries below the visible area cannot be reached, so models and providers below the fold are impossible to select from the UI.

Environment

• opencode version: Desktop 2.0.11 (bundled CLI v2.0.11)
• OS: macOS, Darwin 27.0.0, arm64 (Apple Silicon M1)
• Terminal: N/A (Desktop app)
• Shell: /bin/bash
• Install/channel: stable
• Active plugins: none

Reproduction

1. Open OpenCode Desktop on macOS
2. Open the model picker from the composer (or Settings > Models / Providers)
3. Scroll the list with the mouse wheel or trackpad: no response, no scrollbar
4. Press arrow keys, PgUp/PgDn or Home/End: selection and viewport do not move
5. Only option is to close the dialog

Expected Behavior

The list scrolls with the wheel/trackpad, moves the highlight with arrow keys, and shows a scrollbar when content overflows.

Actual Behavior

The list is completely static: no scroll response, no scrollbar, no keyboard navigation. This reproduces consistently on every attempt.

Additional Context

• Possibly a duplicate or cross-platform case of Keyboard navigation completely broken in General/Shortcuts/Providers/Models dialogs (arrows, PgUp/PgDn not working) #41720 (same dialogs broken on Windows 10, Desktop 1.18.16). Related: [FEATURE]: Support mouse wheel scrolling for faster navigation on macOS #24346 (mouse wheel scrolling missing on macOS, closed as not planned).
• Workaround confirmed: set the default model in ~/.config/opencode/opencode.json via the "model" field (e.g. "openrouter/vendor/model-id"). Verified loaded by the server via /api/config, so this is a UI-only bug.