Line numbers appear for a moment and then disappear

[dingo-d]

I've set my line numbers to be hidden, and when I load my page, I can see the code with line numbers, and then after a second they are gone. If I have set them to be hidden, why are they appearing in the first place? Shouldn't they be hidden at all times?

[dingo-d]

I've added manually:

td.crayon-nums {
    display: none!important;
}

So that kinda 'fixes' the line number issue, but I still think that you should add it so that if you select to hide them, to not render them at all...