Blazor WASM Hot Reload Not Working

Previews
1

I’m using Project IDX to develop a Blazor WebAssembly (WASM) app, and I’m having trouble getting the Hot Reload feature to work. I’d love some guidance from anyone who’s run into similar issues or knows a solution.

Issue:

The Hot Reload functionality doesn’t seem to respond as expected. When I make changes to the code, I would normally expect these to appear in the browser automatically. Instead, I have to refresh the page manually for updates to take effect, which slows down my workflow.

dev.nix

# To learn more about how to use Nix to configure your environment
# see: https://developers.google.com/idx/guides/customize-idx-env
{ pkgs, ... }: {
  # Which nixpkgs channel to use.
  channel = "stable-24.05"; # or "unstable"
  # Use https://search.nixos.org/packages to find packages
  packages = [ 
    pkgs.dotnet-sdk_8
    pkgs.icu.dev
    pkgs.openssl.dev
  ];
  # Sets environment variables in the workspace
  env = { };
  idx = {
    # Search for the extensions you want on https://open-vsx.org/ and use "publisher.id"
    extensions = [ "muhammad-sammy.csharp" ];
    # Enable previews and customize configuration
    previews = {
      enable = true;
      previews = {
        web = {
          command = [ "dotnet" "watch" "run" "--project" "./Client/Client.csproj" "--urls=http://localhost:$PORT" ];
          manager = "web";
        };
      };
    };
  };
}