Android: dialogFragment.isVisible () not working

Question

I am using the / stateLoss evasion add when using DialogFragment. To avoid invalid layoffs, I redefine the method dismiss:

@Override
public void dismiss() {
    if (this.isVisible()) {
        super.dismiss();
    }
}

But isVisible()there is false, even if the dialogue is really visible. This is what isVisible()its documentation says :

Returns true if the fragment is currently displayed to the user. This means that: (1) was added, (2) has a view attached to the window, and (3) is not hidden.

So, if I changed the method to:

@Override
public void dismiss() {
    // This is almost the same as isVisible(), but the latter doesn't
    // work
    if (this.isAdded() && !this.isDetached() && !this.isHidden()) {
        super.dismiss();
    }
}

then it works fine. Is this expected behavior?

Everything is executed after an HTTP request using Ion :

DialogFragment dialog = DialogFragment.newInstance(..., ...);

Ion.with(context, url)
.setCallback(new FutureCallback<JsonObject>() {
    @Override
    public void onCompleted(Exception e, JsonObject result) {
        dialog.dismiss()
    }
});

dialog.show(getFragmentManager(), "tag");