I don’t know if this is a Safari Issue, or a general mallaise with the current version, but on iPhone, running 13.1 PB, when I hit search I can scroll the header all the way off the screen at the top by just swiping up. This happens on meta and three of my sites.
Is this just an iPhone issue - does this happen on Android?
Appreciate using Apple Beta software comes with risks! 
I can repro on iOS 12, so it’s not a beta issue. Looks ok on Android.
I also noticed that it only seems to happen when the keyboard is open, might be something to do with our iOS specific hacks?
The same can be done with the composer, I am not sure if there is anything we can do about this that is not enormously hackey
This has been this way for years afaik
Oh I see this has some history!