`StringComparer.CurrentCultureIgnoreCase.GetHashCode` - broken behavior with `try.dot.net`(online)

[radical]

Describe the bug

@tfenise is seeing broken behavior of StringComparer.CurrentCultureIgnoreCase.GetHashCode with try.dot.net, which is not reproducible with net6.0, or net7.0. I think this might be due to try.dot.net using a very old version of blazor.

From the original issue:

Reproduction Steps

Go to https://docs.microsoft.com/en-us/dotnet/api/system.collections.generic.dictionary-2.-ctor?view=net-6.0#code-try-7. Run the code example in the online .NET Editor.

Expected behavior

It should produce the output as indicated at the end of the code example.

In particular,

Dictionary<string, string> openWith =
    new Dictionary<string, string>(
    StringComparer.CurrentCultureIgnoreCase);
openWith.Add("bmp", "paint.exe");
openWith.Add("BMP", "paint.exe");

should fail.

Actual behavior

The actual output is different from what is indicated at the end of the code example. In particular, openWith.Add("BMP", "paint.exe"); succeeds. Further investigation reveals that StringComparer.CurrentCultureIgnoreCase.Equals("bmp", "BMP") is indeed true, but StringComparer.CurrentCultureIgnoreCase.GetHashCode("bmp") and StringComparer.CurrentCultureIgnoreCase.GetHashCode("BMP") happen to be different.

Did this error occur while using dotnet try or online?

• [ ] dotnet-try
• [x] online

What kind of error was it?

• [ ] User Interface (UI): For example the output never displayed
• [ ] Service Error: For example "The service is temporarily unavailable. We are working on it"
• [x] Other:

Screenshots

If applicable, add screenshots to help explain your problem.

Please complete the following:

• OS
  • [x] Windows 10
  • [ ] macOS
  • [ ] Linux (Please specify distro)
  • [ ] iOS
  • [ ] Android
• Browser
  • [ ] Chrome
  • [x] Edge
  • [ ] Safari

cc @tarekgh