NuxtJS automatically adds script at the end of the body

I'm a newbie NuxtJS programmer. I just searched all over the internet but couldn't find the answer.

I'm just wondering that is it natural that NuxtJS automatically adds the script at the end of the body described as below.

<script type="text/javascript">
        document.oncontextmenu = null;
        document.onselectstart = null;
        document.ondragstart = null;
        document.onmousedown = null;
        document.body.oncontextmenu = null;
        document.body.onselectstart = null;
        document.body.ondragstart = null;
        document.body.onmousedown = null;
        document.body.oncut = null;
        document.body.oncopy = null;
        document.body.onpaste = null;
</script>

Everytime I change my page, it keeps adding this script, so it stacks the same script over and over.

Do you guys have any ideas why this is happening?

I also searched entire code where it does add this script but couldn't find it.

I can give any informations you need, so please help me with this problem.

Many thanks!!!