Outputing a nested resource in a module results in deployment errors

[jahead]

Hey another question #sorry.
I know resourceTypedParamsAndOutputs is not GA but, I was just wondering if this is a bug | future planned work | out-scope
I currently have a module

standard-app-service does a bunch of things, but ends like this.
output appService resource = appService - with is a resource appService 'Microsoft.Web/sites@2023-01-01'

I then use the output in another parent module.
The deployment works fine but azure deployment reports an error when completing the intermediate module.

The template output 'appService' is not valid: The language expression property 'id' can't be evaluated.. (Code: DeploymentOutputEvaluationFailed, Target: appService)

TLDR:
moduleA.outputs.appService -> moduleB.outputs.appservice -> output resource appService
results in: The template output 'appService' is not valid: The language expression property 'id' can't be evaluated.. (Code: DeploymentOutputEvaluationFailed, Target: appService)

If this a bug then I'll happily report it, otherwise just looking for clarity if this a known limitation, so I can design around it?

[jeskew]

This is a bug. I opened #12894 with your question and repro.