@carlw Check my last answer on https://github.com/edvin/tornadofx/issues/243 - I think you're completely right, using builders this way almost makes it unnecessary to support nested FXML via
fx:include
. The example I provide at the bottom shows that you hardly need to rewrite anything at all to support his use case, so I'm beginning to wonder if custom loader is worth the time right now. What do you think?