zsh quirks

[mcandre]

Pre-submit Checks

• I have searched Warp bugs and there are no duplicates
• I have searched Warp known issues page and my issue is not there
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• I have technical issue and have included the logs (optional, but helps expedite the bug fix). Log instructions

Describe the bug

Warp has some quirks with how it integrates with zsh.

To reproduce

1. Launch Warp.

Expected behavior

• Warp should not display noisy messages like Loading zsh... each time a window or tab opens.
• Warp should honor zsh titles, instead of forcing its own tab titles.

Screenshots, videos, and logs

No response

Operating system (OS)

macOS

Operating system and version

macOS Tahoe

Shell Version

zsh 5.9 (arm-apple-darwin24.2.0)

Current Warp version

v0.2026.02.11.08.23.stable_01

Regression

No, this bug or issue has existed throughout my experience using Warp

Recent working Warp date

No response

Additional context

No response

Does this block you from using Warp daily?

Yes, this issue prevents me from using Warp daily.

Is this an issue only in Warp?

Yes, I confirmed that this only happens in Warp, not other terminals.

Warp Internal (ignore): linear-label:b9d78064-c89e-4973-b153-5178a31ee54e

None

[kevinchevalier]

Just to verify, the "Starting Zsh..." message disappears once the shell starts, correct?

[kevinchevalier]

Checking on support for OSC titles.

[krystof-davidek-tf]

No, its actually stucked (see screenshot below), iTerm works just right, so it is not issue with zsh startup script.

[kevinchevalier]

When you mention zsh titles, how are you setting the titles? We do support zsh titles that are set in hooks.

[mcandre]

Mine is not stuck, but I do find it annoying to see a terminal emulator inject text into the shell at all.