This article menctioned some problems the client could face with the current shell extensions:
Apps cannot expose dlls, in-process COM, or .Net GAC components to be used by other software. This also affects ability to have external plug-ins (or this as plug-in to something else), and Shell Extensions.
First of all, we want to highlight the latest update to the Desktop App Converter, which now has support for auto detecting shell extensions from your desktop app and declaring them in the AppXManifest of the app package.
We should try a "bridged" package to see how the client behaves as an UWP application.
This is a follow-up of https://central.owncloud.org/t/windows-10-s-and-owncloud/7834 and sum up some messages from @jturcotte
Windows Desktop Bridge
We should try a "bridged" package to see how the client behaves as an UWP application.