.NET 8 Isolated example, swagger ui wont render but I see the endpoints listed in the runtime window

[netbitshift]

Describe the issue
following this example
https://github.com/Azure/azure-functions-openapi-extension/blob/main/docs/enable-open-api-endpoints-out-of-proc.md

Only thing I added to my program.cs was
.ConfigureFunctionsWorkerDefaults(worker => worker.UseNewtonsoftJson())

To Reproduce
Setup a new Azure v4 function app using .net 8 isolated
Add the references like in the example for out-of-proc examples
Add the attributes to my function

I can see the swagger ui url getting called in the execution window, but the browser window is completely blank.

Expected behavior
Show swagger ui, but when I go the the swagger url, I see only a blank screen
.

[deltastateonline]

Hi there,
i have the exact same problem, following all the instructions, is there a work around or a possible solution

[MvdDonk]

Try using

.ConfigureFunctionsWebApplication(worker => worker.UseNewtonsoftJson())

instead of

.ConfigureFunctionsWorkerDefaults(worker => worker.UseNewtonsoftJson())

see: https://dotnet-worker-rules.azurewebsites.net/rules?ruleid=AZFW0014

Visual Studio and Visual Studio Code are both giving a warning in the IDE: