Interesting find with Quick Reply: it's shotty and the calibration is off but for some reason after rebooting it works BUT only when you actually pull down the notification. Not when you Quick Reply using Notification Center (swiping left and replying). Not sure why it's working this way though.
Edit/workaround: Click the "Smiley" icon that brings up emojis, click back and you can add punctuation, space bar, etc.! It's a little shotty as well but it does seem to recalibrate, if even for just a second, the keyboard.
Hope this helps or at least leads someone to finding a better workaround while we wait for beta 5!
(But honestly it isn't that big a deal given the grand scheme of all the other bugs that were killed with this release)
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