ES-queries

Works as expected because of "lenient : true"

{
	"query": 
	{
		"bool": 
		{
			"should": 
			[
				{
					"simple_query_string": 
					{
						"query": "this",
						"fields": 
						[
							"id",
							"title"
						],

						"default_operator": "and",
						"lenient": true
					}
				}		
			]
		}
	}
}

------------------------------------------------------------------
No results found, no errors - searching in non-existing fields
{
	"query": 
	{
		"bool": 
		{
			"should": 
			[
        			{
					"simple_query_string": 
					{
						"query": "this",
						"fields": 
						[
							"id.nonexisting",
							"title.nonexisting"
						],

						"default_operator": "and"
					}
				}				
			]
		}
	}
}

-----------------------Possible bug here----------------------------
If I combine both queries it doesn't work - no errors, but no results (wrong as I have "should" clause, 
"minimum_should_match" is 1 by default, and the 1st query should yeld results)
{
	"query": 
	{
		"bool": 
		{
			"should": 
			[
                		{
					"simple_query_string": 
					{
						"query": "this",
						"fields": 
						[
							"id",
							"title"
						],

						"default_operator": "and",
						"lenient": true
					}
				},			  
                		{
					"simple_query_string": 
					{
						"query": "this",
						"fields": 
						[
							"id.nonexisting",
							"title.nonexisting"
						],

						"default_operator": "and"
					}
				}				
			]
		}
	}
}

------------------------------------------------------------------
I'm only removing the integer "id" field from the first subquery and it works
{
	"query": 
	{
		"bool": 
		{
			"should": 
			[
        			{
					"simple_query_string": 
					{
						"query": "this",
						"fields": 
						[
							"title"
						],

						"default_operator": "and",
						"lenient": true
					}
				},			  
        			{
					"simple_query_string": 
					{
						"query": "this",
						"fields": 
						[
							"id.nonexisting",
							"title.nonexisting"
						],

						"default_operator": "and"
					}
				}				
			]
		}
	}
}