fixed: waiting opening alert

@@ -337,6 +337,9 @@ wait until alert is visible
     run keyword if                                              ${message_is_none} == ${True}  wait until page contains element  ${alert_opened_locator}  60s  Alert was not shown
     run keyword if                                              ${message_is_none} == ${False}  wait until page contains element  ${alert_message_locator}  60s  Alert was not shown
 
+    # wait for ending animation
+    sleep                                                       500ms
+
 close current visible alert
     [Documentation]                                             закриває поточний alert