Lucene search sort troubles

[lista]

I'm having troubles understanding how the sort works.
When I take a look at the script below, I expect to get a result-set ordered by title. However, this is not the case, and instead I get the result-set that can also be found below.

Any ideas why this happens?

var logFile = userhome.childByNamePath("test.txt");

if (logFile == null) {
   var logFile = userhome.createNode("test.txt", "cm:content");
}

var sortby = "@" + "cm:title";
var query = "PATH:\"" + "/app:company_home/cm:test" + "//*\"";
query += " AND " + "ASPECT:\"" + "cm:folder" + "\"";

var results = search.luceneSearch(query, sortby, false); 
   
for each (result in results) {
   logFile.content += result.properties["cm:title"] + "\n";
}‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

vtest3 vtest3_1273647023066.tiff
UP1_Ulazna 
UP1_Izlazna_1 
UP1_6 
UP1_5
UP1_4 
test9 
test8 
test7 
test66
test6 
test55 
test5 
test4 
test3 
test22
test2 
test10 
test 
test
test
racun
NEUPasdasd 
asdhasdhdlhkasdhl 
asdadasd 
333333 
222222 
21e12e2sdss 
test
tes1111111
test123123
test2
test3
test1
test2
test3
test4
test5
test6
test19
test13
test8
1414
1515
1616
1717
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[lista]

If I exclude the PATH part of the query, the sort appears to work fine. It looks to me that in case of using PATH as a part of your query, 'sort-by' sorts sub-folder by sub-folder, thus making the complete result-set look out of order. Can anyone reproduce this and possibly confirm the issue?