preserveInsertionOrder doesn't work if autoreload applied

[KostromDan]

import com.electronwill.nightconfig.core.file.CommentedFileConfig;

import java.nio.file.Path;
import java.nio.file.Paths;

public class ConfigBugRep {
    private static final Path CONFIG_PATH = Paths.get("config/crash_assistant/config.toml");
    private static final CommentedFileConfig config;

    static {
        CONFIG_PATH.getParent().toFile().mkdirs();
        config = CommentedFileConfig.builder(CONFIG_PATH).preserveInsertionOrder().autosave().autoreload().build();
        setupDefaultValues();
    }

    private static void setupDefaultValues() {
        config.setComment("general", "General comment.");
        addOption("general.opt2",
                "Opt2 comment.",
                "2");
        addOption("general.opt1",
                "Opt1 comment.",
                "1");
    }

    private static <T> void addOption(String path, String comment, T defaultValue) {
        config.set(path, defaultValue);
        config.setComment(path, comment);
    }

    public static void main(String[] args) {
        config.close();
    }
}

Generated config:

#General comment.
[general]
	#Opt1 comment.
	opt1 = "1"
	#Opt2 comment.
	opt2 = "2"

Version: 3.6.4
We add opt2 earlier than opt1. and preserveInsertionOrder() is applied to builder. But opt1 is earlier than opt2 in generated config.

[KostromDan]

Removing .autoreload() fixed issue.

[TheElectronWill]

Can you check if it happens in NightConfig v3.8.1?

[KostromDan]

Can you check if it happens in NightConfig v3.8.1?

On v3.8.1 it even worse. It generated empty config.

[TheElectronWill]

Even after some time? Recent versions apply a throttle delay: the save may be delayed by a few seconds.

[KostromDan]

Even after some time? Recent versions apply a throttle delay: the save may be delayed by a few seconds.

I use config.close();, so according to documentation it should save(blocking) config and after it should be ready for program exit.