EDIT: The best workaround for this problem right now it to enable "Offload Apps" under settings > iPhone Storage. When an app in the Appstore needs to be updated, you can go to this menu and offload the app, and then reinstall it. The reinstalled app will be the updated one and all your data/settings associated with the app will still be there. So ignore the text below this:While not a fix for the underlying problem, for those affected with this I've found a way to "update" apps, although it's super janky, doesn't work all the time and requires fast tapping skills.When on the app update screen, instead of clicking update, swipe to delete the app. When you click delete a prompt will come up saying this will delete all the data associated with the app and ask you to confirm. Here's where you need to be fast. Have one thumb over the delete confirmation and another over the where the app update icon will be. As soon as you tap the delete confirmation, tap the update icon for the app while it's still there. You notice the app will start to "update" before it get's "deleted". Go back to the home screen and you should see the app being updated and still in the folder it was in if you had it in a folder. I haven't done it with enough apps to figure out if it's actually updating the app or just uninstalling and reinstalling it.Sometimes it stays in the folder it was originally in, sometimes it get's placed in the back up the home screen where all newly installed apps would show up, so it seems to be hit or miss…but when it works it at least saves me a few steps of having to move the app back in to the folder