[BUG] Prompt input longer than 4 wrapped lines: bottom line overlaps / gets mixed, input area does not scroll (Windows Terminal, session attached via agent view)
What's Wrong?
When the prompt input wraps to more than 4 lines, the view does not scroll up. The bottom line of the input is drawn over / mixed with the previous line, so the user cannot see what they are typing.
This is in a session that was backgrounded and then attached from agent view (roster shows the pty host created with cols 54, rows 31). Possibly related to #96499 (agent view leaves the terminal in a broken input mode), but that report does not mention input overlap.
What Should Happen?
The input area should grow and the view should scroll so every typed line is visible and not overlapped.
Steps to Reproduce
- Windows Terminal, Korean IME.
- Session backgrounded, then attached from agent view.
- Type a message long enough to wrap to 5+ lines.
- The 5th line overlaps the 4th; the text does not move up.
Claude Code Version
2.1.281
Additional Information
Windows 11 Home (build 26200.9550), Windows Terminal 1.24, Korean IME. Claude Code native install; interactive session started on 2.1.280, native auto-update to 2.1.281 recorded at 2026-09-23T20:56:10Z (the same second the session was backgrounded).