Can't write to protected files

[theapache64]

Shell.SU.run(
    arrayOf(
        "echo \"# Hello :)\" >> /etc/hosts", "cat /etc/hosts"
    )
).also {
    println("Output: $it")
}

It doesn't added "Hello :)" to /etc/hosts file :( . Any idea why?

[saifulrizal]

https://github.com/Chainfire/libsuperuser/issues/115#issue-1040562347