Autocomplete for PHP use stops working right after line with "use" which use grouping

Test project structure:

NS1\First.php
NS1\Second.php
NS2\Third.php
test.php

Trying to autocomplete class name NS2\Third in test.php fails:
 

<?php // test.php

use NS1\{
    First,
    Second
};
use third<<<

But it works well if used before "use" with grouping:

<?php // test.php

use NS2\Third;
use NS1\{
    First,
    Second
};

Also, autocompletion for class names works fine inside class body which has grouping in use block.