Within the WebView2 control a html form with javascript is loaded, the form uses window.onunload and some other html forms I use window.onbeforeunload to call unlock methods on C# Host objects. The ...

a) Trap the visitor in a Matrix-esque tarpit webpage that cannot be left by normal means (this is a known brain-damaged design of onUnload Javascript handlers), ...

I didn't use ajax, but using a basic javascript image request, I've found that it isn't entirely reliable in that it doesn't always execute. I'm seeing that my javascript only runs in about 20% of ...