Invalid error when using $this in a conditional return

[ADmad]

https://psalm.dev/r/c389a23983

class Foo
{
    protected string $var = '';
    
    /**
     * @return ($var is null ? string : $this)
     */
    public function bar(?string $var = null): static|string
    {
        if ($var === null) {
            return $this->var;
        }
        
        $this->var = $var;
        
        return $this;
    }
    
    /**
     * @return $this
     */
    public function baz(): static
    {
        return $this;
    }
}

ERROR: [InvalidDocblock](https://psalm.dev/008) - 9:5 - Unexpected space in docblock for Foo::bar

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/c389a23983

<?php
class Foo
{
    protected string $var = '';
    
    /**
     * @return ($var is null ? string : $this)
     */
    public function bar(?string $var = null): static|string
    {
        if ($var === null) {
            return $this->var;
        }
        
        $this->var = $var;
        
        return $this;
    }
    
    /**
     * @return $this
     */
    public function baz(): static
    {
        return $this;
    }
}

Psalm output (using commit c7c5a69):

ERROR: InvalidDocblock - 9:5 - Unexpected space in docblock for Foo::bar