Request ignores changes to properties that don't apply to it

v2/request.go

@@ -255,6 +255,10 @@ func (request *Request) HandlePropertyNotify (
 	connection *xgbutil.XUtil,
 	event xevent.PropertyNotifyEvent,
 ) {
+	// ignore events that don't apply to our window's destination property
+	if event.Window != request.requestor.Window().Id { return }
+	if event.Atom   != request.destination           { return }
+
 	// the only valid state that we can process a PropertyNotify event in
 	if request.state != selReqStateAwaitChunk { return }
 	if event.State != xproto.PropertyNewValue { return }