I want to add to this. I'm publishing .NET 8 Azure Function apps from Visual Studio 2022. If I check the box that says "Produce single file" in my publish profile, the publish succeeds, but no functions are found and the function app goes into a cycle of trying to reload. We can see the warmup function firing occasionally. No errors are logged anywhere. Even the App Insights telemetry logs only show that no functions were found. This is clearly broken and clearly very difficult to troubleshoot. I hope this helps someone else.