Exploded window makes app almost unuseable

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?

I just downloaded Claude on Windows 11 maybe 1/2 hour ago. On opening the window exploded to cover more than available screen, making the app unuseable since I can't switch to anything else without closing. The only thing that worked to close it is Win Down Arrow. I did some troubleshooting with the app itself which told me to do things that didn't work. It told me to use these words: details like "window explodes/maximizes to cover the entire screen including taskbar, recurring, Windows 11" that gives them something concrete to reproduce. And "happens right when Claude responds, not tied to monitor changes."

What Should Happen?

I don't know, you're the developers. May it should open to fit the available screen size and let user see menu bars at top, task bars etc to be able to navigate.

Error Messages/Logs

Steps to Reproduce

Download Claude for Windows 11.
Open app.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

4.6

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_