I don't have a OneDrive for Business account, but error 403 is "Forbidden". It sounds like it doesn't have the correct credentials (user and password).

For the new iOS 11 Files app, the file provider of Working Copy had to be rewritten. Just last week we found a new way to share information about the source app (Working Copy) with the app that opens the file (Textastic) on iOS 11.

There will be a new version of Working Copy released today and I plan to release a version of Textastic with support for this this week, too. 

I'm working on this. I'll also add the ability to change the sort order of files.

Hello, yes, there are several issues in the current version of Textastic on iPhone X. I received my own iPhone X on Friday and I'm working on an update with full support for it.

This is indeed an iOS bug, but I recently found a workaround. This will be fixed in the next update.

I think you should be able to fix it temporarily by switching from "Replace" to "Search" and back again.

It depends on the selected syntax definition and if you do not enter a file extension, the "Plain Text" syntax definition is used, which doesn't support Emmet tab expansion.

Wow, that's pretty cool! 👍

I'd love to support document providers for this, but unfortunately that's not possible.

I can only show the system UI to browse locations like in the Files app and it's only possible to access the files the user opens through the document picker. I do not have access to the directory tree outside of the files that are selected for security reasons.

Can you please check if the following fixes the issue for you:

- open the Settings app

- go to General -> Accessibility -> Speech

- disable "Speak Selection"

If I disable this setting on my device, the problem seems to go away.