MQ API caused the systemview to be unavailable.

ignite.message(ignite.cluster().forServers()).remoteListen("A1", (nodeId, msg) -> {
             System.out.println(msg);
             return true;
});
  
 for (int i = 0; i < 10; i++)
   ignite.message().sendOrdered("A1", Integer.toString(i),0); 

jdbc:ignite:thin://127.0.0.1/sys> select count(1) from CONTINUOUS_QUERIES; 
Error: General error: "java.lang.IllegalStateException";