Assign to Unit doesn't work on Android (App or Browser)

When I’m using a laptop or desktop PC and working on categorizing transactions there is an “Assign to Unit” option available under the property selected. This allows me to put specific repairs against individual units and is helpful for tracking. I previously believe that I was able to do this on the mobile platform but am no longer able to. I have an Android phone and when I attempt to do this in either the app or just through the browser (set to Desktop mode) I’m unable to “assign to unit” transactions.

As a user I want to be able to view and select the unit of each transaction within the app or when using on a mobile device. This is an important feature for me so I can track expenses against each unit.