Live Preview Shows in WebCore RC1

Delphi 10.4.1; WebCore RC1

LivePreview Shows an error, when Button1 has an event.

Steps to reproduce...

1.New Project, drop WebButton on it => Live Preview does show perfectly fine

2.Add Event OnClick to the button (WebButton1.Caption := TimeToStr(Now);)
=>LivePreview Shows an Error "TForm1 has no published method "WebButton1Click" | fMessage::TForm1 has no published method "WebButton1Click" fHelpContext::0
at http://localhost:8000/Project1-Unit1/Project1.js [259:48]"

Tried that on my older setup with Delphi 10.3.3 and WebCore 1.5.6 - thats does not show this problem...

Thanks, Tom

We could reproduce this. Must be a regression with the IDE integration. We are investigating.