Collabora no menu when using nextcloud app

I’m using collabora and nextcloud in the latest version in docker. When login to nc using a webbrowser collabora works like expected. Using the nextcloud app on android i’m missing the tool bar (bold,italic, …) and the menu bar (file, edit,…).

Is there any solution?

Thanks, Martin

This only happens on my Samsung Galaxy Tab S2. On any Other devices it looks good.