See screenshot below. After updating from 6.3 to 6.4 the inputbar falls mostly behind the keyboard. This only happens when presented as pagesheet, both on iPhone and iPad.

You can test this in MessageKit example app with one small change to the code. In LaunchViewController.swift replace
splitViewController?.showDetailViewController(detailViewController, sender: self)
with
splitViewController?.present(detailViewController, animated: true)
Oh and the SwiftUI example seems to be broken too (even when it's not a pagesheet), I'm not sure if it's related though.
See screenshot below. After updating from 6.3 to 6.4 the inputbar falls mostly behind the keyboard. This only happens when presented as pagesheet, both on iPhone and iPad.
You can test this in MessageKit example app with one small change to the code. In
LaunchViewController.swiftreplacewith
Oh and the SwiftUI example seems to be broken too (even when it's not a pagesheet), I'm not sure if it's related though.