[Bug]: Development store preview on Plus Sandboxes

[bastos71]

Please confirm that you have:

• Searched existing issues to see if your issue is a duplicate. (If you’ve found a duplicate issue, feel free to add additional information in a comment on it.)
• Reproduced the issue in the latest CLI version.

In which of these areas are you experiencing a problem?

Extension

Expected behavior

When activating the "Development store preview" feature in an app extensions panel, new draft features should appear in the Theme Editor given by the command npm run shopify app dev

Actual behavior

On Plus Sandboxes, this does not work, npm run shopify deploy is mandatory to see new features.
It's annoying when you have to work on features linked to Plus only features (like B2B for instance)

Verbose output

➜ npm run shopify app dev -- --store=b2b-accounts.myshopify.com --verbose

> shopify-b2b-accounts-app@1.0.0 shopify
> shopify app dev --store=b2b-accounts.myshopify.com --verbose

2024-04-17T10:20:04.603Z: Running command app dev
2024-04-17T10:20:04.620Z: Getting a random port...
2024-04-17T10:20:04.626Z: Random port obtained: 62539
2024-04-17T10:20:04.668Z: cloudflared already installed, skipping
...

Reproduction steps

1. Run the following command to any Plus Sandbox store :

npm run shopify app dev

2. Add a new component in the extension

3. Command output shows the component is uploaded

4. It does not appear in the Theme Editor, even after reloading the page

Operating System

Mac OS

Shopify CLI version (check your project's package.json if you're not sure)

3.59.0

Shell

zsh

Node version (run node -v if you're not sure)

v20.11.1

What language and version are you using in your application?

Node