[BUG] Currently shitf+tab no longer ser Plan mode. It is toggling the Think mode, same way as the Tab. Tab still works as expected. Claude Code v2.0.17 Shel: Windows Terminal with Powershell 7.5.3 OS: Windows 11

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?

Recently, after release of v2.0.15 the Shift+Tab options stop to set Plan mode and started to toggle the Think mode (The same way a single Tab does).

I have restarted Claude Code and the Machine.
I have uninstalled Claude Code and reinstalled.
I checked that the shift and tab keys are working properly.
I checked all the settings from the Windows Terminal.

Claude Code v2.0.17
OS: Windows 11
Shell: PowerShell v7.5.3

What Should Happen?

When Shift+Tab is pressed Claude Code should change between Plan Mode, Auto Edit Mode, and Normal Mode.

Error Messages/Logs

No error message is displayed.

Steps to Reproduce

1. Start Claude Code
2. Press Shift+Tab
3. Instead of change to Plan mode the Thinking mode toggles between on and off.

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

v2.0.14

Claude Code Version

v2.017

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_