Steps to Reproduce:
go to https://bootswatch.com/cerulean/
look out for the form and the select element
open the select and watch out fot the fixed navbar which disappears
navbar should stay in top of the screen
iOS 10.0.1, Safari
Moved from the Summary:
> In some cases the elements reappear after closing the helper and some cases the elements seem to be loosing their fixed position and stay on th
Original Bootstrap issue: https://github.com/twbs/bootstrap/issues/20759
for a demo see
scroll down to select and watch the navbar disappear on iOS Safari
you can see that the navbar is changing its appearance on mostly everytime selecting an input field
This is the usual problem where we disable position:fixed when a form element has focus. I'm hoping to improve this behavior soon.
it would be OK if the position:fixed is reapplied after closing the input helper
but sometimes the position:fixed is not reapplied to the elements and therefore they stick to the relative positions of the page. In my case it destroys the whole navigation of the page.
My application is a SPA app and therefore contents of the page are changing while choosing an option of the select element via to iOS Safari input helper. Maybe this has something to do with this misbehaviour.
I think I may have fixed that via bug 150079. It did not make it into iOS 10 though.
This may be fixed in iOS 10.3.