Weird scroll behaviour when we're at some slide and change phone orientation

The best way to see this in action is to reproduce it directy in your website:

1. Go to https://alvarotrigo.com/fullPage/es/#page2/2
2. Change mobile device orientation
3. There's a weird scrolling taking place as if the plugin needs to readjust slide position

But the former behavour didn't happen when:

1. Go to https://alvarotrigo.com/fullPage/examples/navigationH.html#secondPage/slide2
2. Change mobile device orientation

I am developing a website where i have encounter the first behaviour in my slides and i'd want to achive the second behaviour.

Thanks!!