Mobile in-app browser navigation glitching

Opened up an article inside the Reddit in-app browser and noticed some funky glitching in the navigation.

Issue
On open, the nav starts half-scrolled, and then on scroll you can see the bottom of the text going behind the navigation.

On mobile Chrome, Safari, and Firefox, the same thing happens- where if the user scrolls inside the nav, the content behind it scrolls- you just can't see it in these browsers due to correct screen positioning of the nav. The in-app browser seems to force the nav to have some kind of margin at the bottom.

This definitely could also be a gatsby problem, reddit mobile problem, in-app browsers as a whole problem, or this particular site problem. I also never throw out the possibility of it being a problem with my own device. I'll poke around and see what I can find.

Sidenote: I also have a CSS hack fix that prevents background content from scrolling when the user scrolls in the nav. I'll open a new issue for that if that's wanted.

Inizia riproducendo il comportamento di navigazione nel browser integrato nell'app di Reddit e confrontalo con Chrome, Safari e Firefox per dispositivi mobili. Ispeziona la navigazione e il CSS del sito, quindi verifica che la navigazione sia posizionata in modo coerente e che lo scorrimento al suo interno non esponga né sposti il contenuto sottostante.