Poor performance of code quality tool

I'm currently reviewing the code quality tool as a potential replacement for sonarqube. My simple initial test isn't giving very promising results, perhaps I have misconfigured something. For nodejs and dotnet core I have added simple applications, then submitted merge requests with some bad code that I would expect code quality to pick up on.

dotnet core

I expect to see warnings for unreachable code, unused functions, unused variables etc.

nodejs

I expect to see warnings for unreachable code, unused functions, unused variables etc.

gitlab-ci

For both apps I use the example ci code from https://docs.gitlab.com/ee/ci/examples/code_quality.html

Are these limitations of code climate? or am I missing something here?