Cant enable linting

[JacksonKearl]

from #11456

Environment data

• VS Code version: 1.45.0-insider
• Extension version (available under the Extensions sidebar): 2020.4.74986
• OS and version: MacOS Mojave
• Python version (& distribution if applicable, e.g. Anaconda): 3.7.2, brew
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): none
• Jedi or Language Server? (i.e. what is "python.jediEnabled" set to; more info How to update the language server to the latest stable version #3977): either
• Value of the python.languageServer setting: Microsoft

I appear to be in a state where I have linting enabled in .vscode/settings.json, but when I run 'Python : Run Linting' nothing at all happens and there is nothing written to the python output channel. When I run 'Python: Enable Linting', it shows 'off' and even when I select 'on' and enter the quick pick again it remains 'off'

Dev tools suggest maybe a caching error?

[JacksonKearl]

If I explicitly set python.linting.pylintEnabled: true linting works, but I would not expect to need to do that based on https://code.visualstudio.com/docs/python/linting#_specific-linters where it says pylint is enabled by default.

[karthiknadig]

This should be addressed as a part of #7314