2.22.6 iOS Bug?

After having updated the Nextcloud App for iOS to 2.22.6, it’s no longer possible to change the upload directory within the App, when trying to upload a file from any other app (e.g. photos oder Scanner Pro). Every time I touch the button, that would allow me to chose a new directory for the upload, I’m automatically set back to the App I came from…maybe a bug?
Reproduced the error on an iPad with iOS 12.1!
iPhone X, 12.1;

I am having the same problem