False positive errors when using class-string<static> inside trait

[gharlan]

https://psalm.dev/r/bc5e4d038b

The errors seem to be new in dev-master, I do not get them with last release.
They only appear in the second class using the trait, not in the first one.

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/bc5e4d038b

<?php

trait Factory
{
    /** @return class-string<static> */
    public static function getFactoryClass()
    {
        return '...';
    }
}

class A
{
    use Factory;
    
    public static function factory(): self
    {
        $class = static::getFactoryClass();
        return new $class;
    }
}

class B
{
    use Factory;
    
    public static function factory(): self
    {
        $class = static::getFactoryClass();
        return new $class;
    }
}

Psalm output (using commit a5672db):

INFO: MoreSpecificReturnType - 5:17 - The declared return type 'class-string<A>' for Factory::getFactoryClass is more specific than the inferred return type 'string(...)'

ERROR: InvalidReturnStatement - 30:16 - The inferred type 'A' does not match the declared return type 'B' for B::factory

ERROR: InvalidReturnType - 27:39 - The declared return type 'B' for B::factory is incorrect, got 'A'

[muglug]

Thanks!