Bug report

https://phpstan.org/r/f68251de-0b7c-48fb-b174-549b2bd0a933

class HelloWorld
{
	/**
     * @template A of int
	 * @template B of float
     * @template C of number
	 * @template D of int|float
	 * @return C
     */
    public function minifs()
    {
	}
}

1. B, C and D = bound type float is not supported
2. Method HelloWorld::minifs() should return C of float|int but return statement is missing

IMO, this looks like a bug – PHPStan understands the bound type but still complains that it isn't supported.