LINQPad9 Bug - Util.DisplayWebPageHtml("<html/>") - NullReferenceException

In the latest version of LPQ9 (9.8.12),
calling method: Util.DisplayWebPageHtml() fails with NullReferenceException.

Code to reproduce:

Util.DisplayWebPageHtml("<html><body><p>Foo</p></body></html>")

It fails with: