Multi-chat input boxes are differently sized

[romalpani]

Current:

Screen.Recording.2026-08-19.at.1.12.37.PM.mov

Expected:

Input box should be the same across chats within a session.

[ehsaan-qazi]

Hi Sandeep Somavarapu (@sandy081) — I noticed this is assigned to you. I'd be happy to help investigate/fix this if it's still open for outside contribution, or if there's a related area I could help with instead. Let me know if you'd like a hand, or if you've already got a fix in progress. Thanks!

[alexdima]

I could also reproduce on latest Insiders, this is specifically the New Chat input vs existing chat input

Screen.Recording.2026-08-24.at.11.17.33.mov

Version: 1.135.0-insider
Commit: 0052619e71feb774a574b37f4f2ea20c36547373
Date: 2026-08-23T20:50:57-07:00
Electron: 42.8.1
ElectronBuildId: 14906494
Chromium: 148.0.7778.280
Node.js: 24.18.1
V8: 14.8.178.38-electron.0
@github/copilot: 1.0.81-0
@github/copilot-sdk: 1.0.11
OS: Darwin arm64 25.6.0