Wrong class function insertion

[f1e]

If a file contains several classes, insertion goes to wrong class.
What i did:
create file with following code:

<?php

class Foo
{
    private $a;
}

class Bar
{
    private $b;
}

put cursor on private $a and run insert PHP setter
What i expected:
class Foo to have setter function for private $a

<?php

class Foo
{
    private $a;

    /**
     * Set the value of a
     *
     * @return  self
     */ 
    public function setA($a)
    {
        $this->a = $a;

        return $this;
    }
}

class Bar
{
    private $b;
}

What i get instead:
class Bar got setter for private $a

<?php

class Foo
{
    private $a;
}

class Bar
{
    private $b;

    /**
     * Set the value of a
     *
     * @return  self
     */ 
    public function setA($a)
    {
        $this->a = $a;

        return $this;
    }
}

checked on win10
vscode 1.36.1
extension version: 1.2.3