Subwindow rpc call connector not found


If I try to close a Subwindow, it does not close.
The Window is allready in the forground until i reloading the page.

When i move the Subwindow the console show log:

WARNUNG: RPC call to com.vaadin.shared.ui.window.WindowServerRpc.windowMoved received for connector 101 but no such connector could be found. Resynchronizing client.

I hope you already got it fixed, but if you didn’t, could you check that your widgetset and server run the same versions of Vaadin?