[Bug]: "shopify app dev" swallows server logs and rebuild output on Ubuntu 24.04 (Hot Reload works, Terminal silent)

[salman-sc]

Issue Description: I am experiencing an issue on Ubuntu 24.04 where shopify app dev runs the app successfully, but swallows all runtime output.

Functionality: Hot-reload is working. If I change a file, the app updates in the browser.

The Problem: The terminal remains completely static. It does not show "rebuilding...", "file changed", or any console.log() output from the backend.

Impact: I cannot debug my app because server-side logs and errors are never printed to the terminal.

This appears to be an issue with how the CLI pipes stdout/stderr from the child process to the main terminal on Ubuntu 24.04. This same project works correctly (showing logs) on Windows.

Environment:

OS: Ubuntu 24.04 LTS

Shopify CLI Version: 3.88.0

Node Version: v20.19.6

Shell: Bash

Steps to Reproduce:

Run shopify app dev.

Wait for the server to start.

Add a console.log("TEST LOG") to a backend loader/action.

Save the file.

Refresh the app in the browser (the change takes effect).

Check the terminal.

Expected Behavior: The terminal should output the "TEST LOG" string and show build status updates.

Actual Behavior: The terminal shows nothing.

[github-actions]

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[AryanKansagara]

I've submitted a potential fix for this issue: #6800
Would appreciate if anyone with Ubuntu 24.04 could test the branch to verify it resolves the problem!

[AryanKansagara]

I have signed the CLA!

[AryanKansagara]

I've submitted PR #6800 with a potential fix for this issue.

The fix adds explicit stream buffering options and disables execa's output buffering to ensure real-time streaming across platforms.

If anyone experiencing this on Ubuntu 24.04 could test the branch, that would help validate the fix!

#6800

[github-actions]

This issue seems inactive. If it's still relevant, please add a comment saying so. Otherwise, take no action.
→ If there's no activity within a week, then a bot will automatically close this.
Thanks for helping to improve Shopify's dev tooling and experience.

P.S. You can learn more about why we stale issues here.

[RStaff]

Hey salman-sc — following up on your Shopify CLI dev workflow issue.

I’m still pretty sure I could help you get it stable quickly if it’s still blocking you.

If you want, send over the setup details and I’ll take a look.