Edge: Focus jumps back to browser control when trying to leave

[sratz]

To Reproduce

• Start with a simple eclipse installation (e.g. platform runtime binary)
• Close welcome page
• Open 'Internal Web Browser' view and move it to the editor area
• Create a dummy project with a dummyFile.txt
• Open that file
• Switch to the browser tab
• Press Ctrl-E -> switch to dummyFile.txt
• Editor tab jumps to dummyFile.txt
• Editor tab immediately jumps back to Browser

Screenshots

Environment:

1. Select the platform(s) on which the behavior is seen:

• • All OS
• • Windows
• • Linux
• • macOS

Workaround (or) Additional context
The are much more situations where this occurs. The Ctrl-E is just a very easy one to reproduce.

The problem is the following:

• When the Ctrl-E popup closes, focus is returned to SWT-Edge and we receive an SWT.FocusIn event (Edge.browserFocusIn(Event)).
• We also need to inform WebView2 of this fact and call controller.MoveFocus(COM.COREWEBVIEW2_MOVE_FOCUS_REASON_PROGRAMMATIC);
• SWT switches to another editor
• -----async----
• Now, with an async delay, WebView2 informs us again in handleGotFocus that it has received focus.
• We move focus to SWT-Browser again, even though this event is now obsolete