[Bug] TUI frames duplicating into scrollback on window reflow

Bug Description
Claude Code v2.1.114 — TUI frames duplicating into scrollback Reproduces on: - macOS (Terminal.app, default xterm-256color profile) - Windows (same version) Symptom: After a few interactions, the whole TUI frame (welcome banner + transcript + input divider) re-emits into scrollback each time the window reflows, so the screen ends up with 3+ stacked copies of the same UI.

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.114
• Feedback ID: dd4e4c41-37a5-49d0-b525-ed57d8bda883

Errors

[{"error":"Error: console.error: [bun] Warning: ws.WebSocket 'unexpected-response' event is not implemented in bun\n    at K (/$bunfs/root/src/entrypoints/cli.js:525:11889)\n    at emitWarning (ws:43:42)\n    at #onOrOnce (ws:170:18)\n    at Dr_ (/$bunfs/root/src/entrypoints/cli.js:3832:4680)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-18T18:09:13.524Z"}]