No nullable reference inspections in Rider?

Hi Jetbrains team,

My (up to date 2019.3) Rider doesn't seem to be showing inspections for nullable reference types. I've included a screenshot below:

It's finding plenty of warnings during build, but the editor doesn't seem to be aware of them (warnings and errors unrelated to null references are indicated correctly). Is this a missing feature & if so is there any roadmap for it?

I've checked and none of my disabled inspections are relevant (and I haven't disabled any new ones from the defaults). My project is also fully indexed and I've tried clearing caches etc.

Thanks in advance!

Ashley

PS: Thanks for making such a fantastic set of IDEs! Moving from Eclipse to IntelliJ years ago was a revelation, and ditto from Visual Studio to Rider a few years after that. I'm impressed how much power they pack considering they start quickly, index quickly, and hardly ever seem to crash or lag.

Potentially relevant info - I've enabled nullable references in my C# 8.0 / dotnet core 3.1 (.101) project. I'm on MacOS and do not have Mono installed (so it's definitely using the right runtime, I think), and I'm using MSBuild 16.0 provided by dotnet.