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"Seems like your shell is taking a while to start" false positive when using expect in a tab #9011
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area:shell-terminalTerminal input/output, shell integration, prompt behavior, and block rendering.Terminal input/output, shell integration, prompt behavior, and block rendering.bugSomething isn't working.Something isn't working.os:macmacOS-specific behavior, regressions, or requests.macOS-specific behavior, regressions, or requests.ready-to-implementThe issue is ready for implementation work.The issue is ready for implementation work.repro:highThe report includes enough evidence that the issue appears highly reproducible.The report includes enough evidence that the issue appears highly reproducible.triagedIssue has received an initial automated triage pass.Issue has received an initial automated triage pass.
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area:shell-terminalTerminal input/output, shell integration, prompt behavior, and block rendering.Terminal input/output, shell integration, prompt behavior, and block rendering.bugSomething isn't working.Something isn't working.os:macmacOS-specific behavior, regressions, or requests.macOS-specific behavior, regressions, or requests.ready-to-implementThe issue is ready for implementation work.The issue is ready for implementation work.repro:highThe report includes enough evidence that the issue appears highly reproducible.The report includes enough evidence that the issue appears highly reproducible.triagedIssue has received an initial automated triage pass.Issue has received an initial automated triage pass.
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Describe the bug
Since updating to v0.2026.04.01.08.39.stable_02, any tab that uses
expectto spawn a subprocess shows "Seems like your shell is taking a while to start" permanently, even though the shell starts immediately and works correctly.This worked fine before this update.
The warning is cosmetic but disruptive. The shell and spawned process work correctly.
Version: v0.2026.04.01.08.39.stable_02
macOS: 26.4
To reproduce
Reproduction:
expectscript that spawns a process (e.g.expect -c "spawn /bin/zsh; interact")Expected behavior
Expected: No warning
Actual: Persistent "Seems like your shell is taking a while to start" banner
Screenshots, videos, and logs
Operating system (OS)
macOS
Operating system and version
MacOS Tahoe 26.4
Shell Version
zsh 5.9 (arm64-apple-darwin25.0)
Current Warp version
v0.2026.04.01.08.39.stable_02
Regression
Yes, this bug started recently or with an X Warp version
Recent working Warp date
April 4, 2026
Additional context
Using
expectto spawn a subprocess inside a Warp tab now permanently shows "Seems like your shell is taking a while to start" warning. This worked correctly before this update.Use case: An AppleScript launches a new Warp tab via keystroke, which triggers a zsh startup script that uses
expectto spawn Claude Code and send it a /rename command. This workflow worked perfectly before v0.2026.04.01.08.39.stable_02.The shell and subprocess work correctly - the warning is a false positive caused by expect replacing the shell process before Warp finishes its bootstrap sequence.
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