Lerna run dev --parallel command is not starting all the processes

[oscarfolha]

Current Behavior

After Lerna version 8.1.0, I started to have this behavior. When I run the command lerna run dev --parallel, it seems that the components inside my "packages" folder, all start to run but override themselves, in the end only one of them is up.

We have nodemon that implies the start of our react application but is overridden by the start of our API server a node.js application. We even have one more component that we don't even see in the starting logs.

I checked Lerna's logs between version 8.1.0 and 8.0.2 and nothing caught my eye related to this issue, that's why I assumed it was a bug.

Expected Behavior

In previous versions, all the processes started in parallel as expected after I ran that command.
Normally with Lerna version 8.0.2 for example, our logs would look like this

All 3 processes are up.

Steps to Reproduce

Try to run lerna run dev --parallel in a scenario where you have a folder called packages with different react and node applications.

Failure Logs / Configuration

This is my lerna.json file:

Environment

This has been happening since starting our application in development mode locally.