Cefsharp: LoadHtml/RegisterResourceHandler displays empty page

[amaitland]

• What version of the product are you using?
  75.1.141

• What architecture x86 or x64?
  Either

• On what operating system?
  Win 10

• Are you using WinForms, WPF or OffScreen?
  All

• What steps will reproduce the problem?
  Call LoadHtml without setting browser.RequestHandler

• What is the expected output? What do you see instead?
  Html to load, instead only a blank screen.

Originally reported in https://github.com/cefsharp/CefSharp/issues/2788#issuecomment-522976148

[amaitland]

Current implementation checks if RequestHandler is null then returns NULL which is incorrect.
https://github.com/cefsharp/CefSharp/blob/cefsharp/75/CefSharp.Core/Internals/ClientAdapter.cpp#L542

Workaround in the short term is to set the RequestHandler to the default implementation.
c# browser.RequestHandler = new CefSharp.Handler.RequestHandler();

[amaitland]

Updated title as this also is a problem for RegisterResourceHandler which LoadHtml uses.

[amaitland]

Fixed in master in commit https://github.com/cefsharp/CefSharp/commit/61e82bc50c8c7e54da089bef99fc031deee58c50 and cefsharp/75 branch in https://github.com/cefsharp/CefSharp/commit/aab505a1fc2a8708ccce3ae9ac15634b7600db2f