Overview of merged pull requests
doing the check if a render was successful cannot only happen via $this->getLastEvaluationStatus() -> as the render path might contain a lazy-prop (closure) which, when evaluated uses the same runtime. -> if the last lazy-prop has an @if annotation its skipped, but the $lastEvaluationStatus is set on the same runtime. -> there might still be partial successful output (the first values of a lazy-prop eg.) so we need to check additionally if the return value is null.