HTMLViewer with Webkit renderer stops remote debugging

I develop on MacOS but use Remote Debugger running in a VirtualBox VM to work on the Windows version of my app. This all works well.

I need to add an HTMLViewer to my app for a specific authentication task but I need to use the WebKit renderer on Windows to be able to get the cookies from the HTMLViewer using the MBS Chromium cookie classes.

As soon as I switch the HTMLViewer to use the Webkit renderer, I have a problem launching my app in the Remote Debugger. Xojo reports “Launching Application” with a 100% progress bar but my app never launches. If I switch the HTMLViewer control back to using the Native renderer, the app launches as usual. So it seems that switching on/including the Webkit renderer is causing Xojo and/or the Remote Debugger some problem.

Has anybody else see this and do you know of a solution?

What version of Xojo? I’ve successfully remote debugged with WebKit renderer, but that was prior to the CEF update.

Sorry I should have included this. It’s 2017 r2.1.