Unable to use command line argument --language-worker

[denilinguist]

I work on a project that runs simultaneously three distincts azure functions. We use azure-functions-core-tools V3 for two years now; in order to debug each instance, we use the language-worker parameter from func to configure the debug ports of the underlying nodes processes (as described here), e.g.:

func start --language-worker -- "--inspect=9229"

All was working fine with func core V3. Since we moved to V4 a few days ago, it's not working anymore:

I can provide details if needed, but empirical digging indicates that the problem arise at en early stage, before Node is effectively launched.

[denilinguist]

Any news ? It it reproducible ?