Cannot create a new document using UIDocumentBrowserViewController in iOS 13 Simulator

Originator:me
Number:rdar://7250982 Date Originated:2019-09-11
Status:Open Resolved:
Product:Xcode Simulator Product Version:11 GM
Classification:Bug Reproducible:Always
 
FB7250982

After tapping the plus icon in UIDocumentBrowserViewController in iOS 13 Simulator to create a document, 
both in the nav bar as well as in the main content (when Browse / On my iPad is selected), all that happens is that the following error message is printed in the Xcode console:

```
2019-09-11 15:58:59.443967+0200 UIDocumentBrowserViewControllerExample[31951:2001090] [DocumentManager] Cannot create urlWrapper for url file:///Users/tomkraina/Library/Developer/CoreSimulator/Devices/51581B3F-7561-4139-BF2F-23905344160F/data/Containers/Data/Application/0C49C058-2BCE-4EE0-AB28-1CDFFB8313F4/tmp/910EAC6A-F895-489A-A0D2-17A43C6D3CA0.txt. error Error Domain=NSPOSIXErrorDomain Code=22 "couldn't issue sandbox extension com.apple.app-sandbox.read-write for '/Users/tomkraina/Library/Developer/CoreSimulator/Devices/51581B3F-7561-4139-BF2F-23905344160F/data/Containers/Data/Application/0C49C058-2BCE-4EE0-AB28-1CDFFB8313F4/tmp/910EAC6A-F895-489A-A0D2-17A43C6D3CA0.txt': Invalid argument" UserInfo={NSDescription=couldn't issue sandbox extension com.apple.app-sandbox.read-write for '/Users/tomkraina/Library/Developer/CoreSimulator/Devices/51581B3F-7561-4139-BF2F-23905344160F/data/Containers/Data/Application/0C49C058-2BCE-4EE0-AB28-1CDFFB8313F4/tmp/910EAC6A-F895-489A-A0D2-17A43C6D3CA0.txt': Invalid argument}.
```

When the same app is run on a real device, everything works as expected.

Related question on Stack Overflow: https://stackoverflow.com/questions/57807670/uidocumentbrowserviewcontroller-error-cannot-create-urlwrapper-for-url-on-ios1?stw=2



Steps to reproduce:
1. Open the attached Xcode project and run in iOS 13 Simulator (e.g. iPad Pro 11")
2. Tap the "+" icon in the nav bar to create a new document

The attached project is basically just a "Document Based App" template with implemented documentBrowser(_ controller:didRequestDocumentCreationWithHandler:) method


Expected behaviour:
I expected a new document would be created and presented from the document browser.

Actual behaviour:
Nothing is presented from the document browser and the following message is printed in the Xcode console:

```
2019-09-11 15:58:59.443967+0200 UIDocumentBrowserViewControllerExample[31951:2001090] [DocumentManager] Cannot create urlWrapper for url file:///Users/tomkraina/Library/Developer/CoreSimulator/Devices/51581B3F-7561-4139-BF2F-23905344160F/data/Containers/Data/Application/0C49C058-2BCE-4EE0-AB28-1CDFFB8313F4/tmp/910EAC6A-F895-489A-A0D2-17A43C6D3CA0.txt. error Error Domain=NSPOSIXErrorDomain Code=22 "couldn't issue sandbox extension com.apple.app-sandbox.read-write for '/Users/tomkraina/Library/Developer/CoreSimulator/Devices/51581B3F-7561-4139-BF2F-23905344160F/data/Containers/Data/Application/0C49C058-2BCE-4EE0-AB28-1CDFFB8313F4/tmp/910EAC6A-F895-489A-A0D2-17A43C6D3CA0.txt': Invalid argument" UserInfo={NSDescription=couldn't issue sandbox extension com.apple.app-sandbox.read-write for '/Users/tomkraina/Library/Developer/CoreSimulator/Devices/51581B3F-7561-4139-BF2F-23905344160F/data/Containers/Data/Application/0C49C058-2BCE-4EE0-AB28-1CDFFB8313F4/tmp/910EAC6A-F895-489A-A0D2-17A43C6D3CA0.txt': Invalid argument}.
```

Comments

Demo app

https://github.com/tomaskraina/feedbackassistant.apple.com/tree/master/FB7250982-UIDocumentBrowserViewController-vs-iOS13Simulator

By me at Sept. 11, 2019, 2:56 p.m. (reply...)

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