CodeActions on visual studio

Hi,

Thank you for the great library. I had a question about CodeActions and how they work with Visual Studio (not VS Code). We are seeing a weird behavior and wondering if there's something we're missing.

The scenario is simple. Using the ITextDocumentSyncHandler, we are publishing diagnostics with the below properties:
Range, Message, Severity, RelatedInfo, Source, Code, and CodeDescription.

And using the ICodeActionHandler, we are returning a codeAction with the below properties:
Title, Edit, Diagnostics, IsPreferred

The weird behavior is that the codeAction will display with no issues, as long as there are no diagnostics that we published. It doesn't display for any range where there is a diagnostic (again, that we created). For other diagnostics, there are no issues.

I have tried multiple combinations of the properties above and seem to always get this behavior. Have you seen this issue before? Let me know.

Thanks again for building this awesome library!

Start by reproducing the Visual Studio behavior described with ITextDocumentSyncHandler diagnostics and ICodeActionHandler responses, focusing on actions associated with diagnostic ranges. Compare the listed diagnostic and code action properties with cases where actions display; done means code actions appear for ranges containing published diagnostics, with a confirmed explanation or fix.