Envvar is ignored for options inside option group

[zeldigas]

I'm using option group to organize 2 properties with cooccuring feature. Options inside has envvar defined.

The problem is that env variable is not used to resolve option. This works properly for plain options that are defined without option group

private class UserCreds : OptionGroup("Confluence user credentials") {
    val confluenceUser: String by option("--user", envvar = "CONFLUENCE_USER").required()
    val confluencePassword: String? by option(
        "--password",
        envvar = "CONFLUENCE_PASSWORD",
        help = "User password or personal API token provided instead of password (e.g. in Confluence Cloud)"
    )
}

class Upload : CliktCommand(name = "upload", help = "Converts source files and uploads them to confluence") {

    private val confluenceUrl: Url? by option(
        "--confluence-url", envvar = "CONFLUENCE_URL",
        help = "Address of confluence server. For Confluence cloud it is usually https://<site>.atlassian.net/wiki"
    ).convert { Url(it) }
    private val userCreds: UserCreds? by UserCreds().cooccurring()
....

In this example CONFLUENCE_URL is propertly resolved, while CONFLUENCE_USER is ignored