Pipelines validator does not point out that parallel steps can't contain deployments.

As per the title, there is no mention on the documentation that this isn't possible and it would be useful for the bitbucket Pipelines yml validator to point that parallel steps cannot have deployment steps.

Today, the behavior looks like this:

Yml file, validator did not point that this is an impossible config:

Pipelines showing that this is an issue and cannot proceed with the build: