ios 13 files app with 2.23.8 (9) files not accessible

Expected behaviour

new/not previously accessed nextcloud files to be accessible first time through the iOS files application

Actual behaviour

only files that have been viewed in the nextcloud iOS app are accessible. if you have not downloaded a file first it is visible but nothing happens when you click on it. there is no preview thumbnail of the item either.

Steps to reproduce

try to view a file in iOS Files that you have not accessed previously in the iOS nextcloud app. nothing happens. go into the iOS nextcloud app and click on a file to download it and see the content. go back into the iOS files app and the file is visible, has a thumbnail picture and works as expected

iOS version

iOS 13 beta 3

App version

2.23.8 (9)

Server configuration

Operating system:
Ubuntu 18.04

Web server:
Apache/2.4.29 (Ubuntu)

Database:
MySQL 5.7.26-0ubuntu0.18.04.1-log (Ubuntu)

PHP version:
PHP 7.2.17-0ubuntu0.18.04.1

Nextcloud version: (see Nextcloud admin page)
Nextcloud 16.0.1

The report names no source file or test. Start by reproducing access to a previously unviewed file through the iOS Files application using iOS 13 beta 3 and app version 2.23.8 (9); done means the file opens and displays a preview without first downloading it in the Nextcloud app.