RDM crashes on embedded websession (webview2) since update to version 2026.3.X

Hi Everyone,
since I have updated to version 2026.3.X my RDM crashes after a while when a website-session is active. So far I can tell that it happens always when I change focus back to RDM.
First the window freezes and after a view seconds RDM closes completely.

In the eventlog I can see three entries:

The first is an WebView2Controller.MoveFocus error:

The two entries after this error have the same content:

The part "F107AF84049F3D11396FD71955F555198DEEB8C7E0C992FF24C0CFCE20E3AA2CD__InterfaceImplementation.global::Avalonia.Controls.Win.WebView2.Interop.ICoreWebView2Controller.MoveFocus(COREWEBVIEW2_MOVE_FOCUS_REASON reason)"
looks for me more as a webview2 problem. But I've only been having this problem since the update to version 2026.3.X.
And I also reinstalled .Net Runtime and webview2.

Is there anyone facing the same problem?