mobile outlook on supervised device - unzip files

Hello,

In the middle of testing IOS supervised devices and noticed outlook does not unzip files.

When opening a zipped attachment in outlook, I can see a preview, however if you click the button 'Open in Word', the app opens up (currently using the new Microsoft office app) and this doesn't unzip the file.

Our settings currently are that documents remain within managed apps.

How does everyone manage zipped files with Microsoft outlook for IOS mobile devices?

thanks